diff --git a/src/components/seal-form/seal-textarea.tsx b/src/components/seal-form/seal-textarea.tsx
index b55b105c..e12b4d0f 100644
--- a/src/components/seal-form/seal-textarea.tsx
+++ b/src/components/seal-form/seal-textarea.tsx
@@ -19,6 +19,7 @@ const SealTextArea: React.FC<TextAreaProps & SealFormItemProps> = (props) => {
     variant,
     extra,
     addAfter,
+    trim,
     ...rest
   } = props;
   const [isFocus, setIsFocus] = useState(false);
diff --git a/src/pages/playground/components/ground-left.tsx b/src/pages/playground/components/ground-left.tsx
index 9c01035e..5e0f6bfa 100644
--- a/src/pages/playground/components/ground-left.tsx
+++ b/src/pages/playground/components/ground-left.tsx
@@ -16,7 +16,7 @@ import {
 } from 'react';
 import { CHAT_API } from '../apis';
 import { OpenAIViewCode, Roles, generateMessages } from '../config';
-import { MessageItem } from '../config/types';
+import { MessageItem, MessageItemAction } from '../config/types';
 import '../style/ground-left.less';
 import '../style/system-message-wrap.less';
 import MessageInput from './message-input';
@@ -53,6 +53,11 @@ const GroundLeft: React.FC<MessageProps> = forwardRef((props, ref) => {
   const paramsRef = useRef<any>(null);
   const messageListLengthCache = useRef<number>(0);
   const reasonContentRef = useRef<any>('');
+  const [actions, setActions] = useState<MessageItemAction[]>([
+    'upload',
+    'delete',
+    'copy'
+  ]);
 
   const { initialize, updateScrollerPosition } = useOverlayScroller();
   const { initialize: innitializeParams } = useOverlayScroller();
@@ -249,6 +254,15 @@ const GroundLeft: React.FC<MessageProps> = forwardRef((props, ref) => {
     setMessageList(userMsg);
   };
 
+  const handleOnCheck = (e: any) => {
+    const checked = e.target.checked;
+    if (checked) {
+      setActions(['upload', 'delete', 'copy', 'markdown']);
+    } else {
+      setActions(['upload', 'delete', 'copy']);
+    }
+  };
+
   const throttleUpdatePosition = _.throttle(updateScrollerPosition, 100);
 
   useEffect(() => {
@@ -303,6 +317,7 @@ const GroundLeft: React.FC<MessageProps> = forwardRef((props, ref) => {
                 setMessageList={setMessageList}
                 editable={true}
                 loading={loading}
+                actions={actions}
               />
               {loading && (
                 <Spin size="small">
@@ -323,6 +338,18 @@ const GroundLeft: React.FC<MessageProps> = forwardRef((props, ref) => {
               minRows: 5,
               maxRows: 5
             }}
+            actions={[
+              'clear',
+              'layout',
+              'role',
+              'upload',
+              'add',
+              'paste',
+              'check'
+            ]}
+            defaultChecked={false}
+            checkLabel="Markdown"
+            onCheck={handleOnCheck}
             loading={loading}
             disabled={!parameters.model}
             isEmpty={!messageList.length}
diff --git a/src/pages/playground/components/message-input.tsx b/src/pages/playground/components/message-input.tsx
index f06fb66d..7f151e58 100644
--- a/src/pages/playground/components/message-input.tsx
+++ b/src/pages/playground/components/message-input.tsx
@@ -96,6 +96,7 @@ interface MessageInputProps {
   style?: React.CSSProperties;
   actions?: ActionType[];
   checkLabel?: React.ReactNode;
+  defaultChecked?: boolean;
   defaultSize?: { minRows: number; maxRows: number };
 }
 
@@ -116,6 +117,7 @@ const MessageInput: React.FC<MessageInputProps> = forwardRef(
       isEmpty,
       submitIcon,
       placeholer,
+      defaultChecked = true,
       tools,
       style,
       checkLabel,
@@ -356,35 +358,31 @@ const MessageInput: React.FC<MessageInputProps> = forwardRef(
         <div className="tool-bar">
           <div className="actions">
             {title}
-            {
+            {actions.includes('role') && (
               <>
-                {actions.includes('role') && (
-                  <>
-                    <Button
-                      type="text"
-                      size="middle"
-                      onClick={handleToggleRole}
-                      icon={<SwapOutlined rotate={90} />}
-                    >
-                      {intl.formatMessage({ id: `playground.${message.role}` })}
-                    </Button>
-                    <Divider type="vertical" style={{ margin: 0 }} />
-                  </>
-                )}
-                {actions.includes('upload') && message.role === Roles.User && (
-                  <UploadImg
-                    handleUpdateImgList={handleUpdateImgList}
-                    size="middle"
-                  ></UploadImg>
-                )}
+                <Button
+                  type="text"
+                  size="middle"
+                  onClick={handleToggleRole}
+                  icon={<SwapOutlined rotate={90} />}
+                >
+                  {intl.formatMessage({ id: `playground.${message.role}` })}
+                </Button>
+                <Divider type="vertical" style={{ margin: 0 }} />
               </>
-            }
-            {tools}
+            )}
             {actions.includes('check') && (
-              <Checkbox onChange={onCheck} defaultChecked={true}>
+              <Checkbox onChange={onCheck} defaultChecked={defaultChecked}>
                 {checkLabel}
               </Checkbox>
             )}
+            {actions.includes('upload') && message.role === Roles.User && (
+              <UploadImg
+                handleUpdateImgList={handleUpdateImgList}
+                size="middle"
+              ></UploadImg>
+            )}
+            {tools}
             {actions.includes('clear') && (
               <Tooltip
                 title={intl.formatMessage({ id: 'common.button.clear' })}
diff --git a/src/pages/playground/components/multiple-chat/content-item.tsx b/src/pages/playground/components/multiple-chat/content-item.tsx
index da10dcdb..3c42c176 100644
--- a/src/pages/playground/components/multiple-chat/content-item.tsx
+++ b/src/pages/playground/components/multiple-chat/content-item.tsx
@@ -1,15 +1,9 @@
-import CopyButton from '@/components/copy-button';
-import { MinusCircleOutlined } from '@ant-design/icons';
 import { useIntl } from '@umijs/max';
-import { Button, Input, Tooltip } from 'antd';
-import classNames from 'classnames';
-import _ from 'lodash';
-import React, { useCallback, useRef } from 'react';
-import { Roles } from '../../config';
+import React from 'react';
 import { MessageItem, MessageItemAction } from '../../config/types';
 import '../../style/content-item.less';
-import ThumbImg from '../thumb-img';
-import UploadImg from '../upload-img';
+import MessageActions from './message-actions';
+import MessageBody from './message-body';
 
 interface MessageItemProps {
   data: MessageItem;
@@ -31,143 +25,6 @@ const ContentItem: React.FC<MessageItemProps> = ({
   actions = ['upload', 'delete', 'copy']
 }) => {
   const intl = useIntl();
-  const inputRef = useRef<any>(null);
-  const imgCountRef = useRef(0);
-
-  const handleMessageChange = (e: any) => {
-    updateMessage?.({
-      imgs: data.imgs || [],
-      role: data.role,
-      content: e.target.value,
-      uid: data.uid
-    });
-  };
-
-  const handleToggleRole = () => {
-    updateMessage?.({
-      imgs: data.imgs || [],
-      role: data.role === Roles.User ? Roles.Assistant : Roles.User,
-      content: data.content,
-      uid: data.uid
-    });
-  };
-
-  const getPasteContent = useCallback(
-    async (event: any) => {
-      const clipboardData = event.clipboardData || window.clipboardData;
-      const items = clipboardData.items;
-      const imgPromises: Promise<string>[] = [];
-
-      for (let i = 0; i < items.length; i++) {
-        let item = items[i];
-
-        if (item.kind === 'file' && item.type.indexOf('image') !== -1) {
-          const file = item.getAsFile();
-          const imgPromise = new Promise<string>((resolve, reject) => {
-            const reader = new FileReader();
-            reader.onload = function (event) {
-              const base64String = event.target?.result as string;
-              if (base64String) {
-                resolve(base64String);
-              } else {
-                reject('Failed to convert image to base64');
-              }
-            };
-            reader.readAsDataURL(file);
-          });
-          imgPromises.push(imgPromise);
-        } else if (item.kind === 'string') {
-          // string
-        }
-      }
-
-      try {
-        const imgs = await Promise.all(imgPromises);
-        if (imgs.length) {
-          const list = _.map(imgs, (img: string) => {
-            imgCountRef.current += 1;
-            return {
-              uid: imgCountRef.current,
-              dataUrl: img
-            };
-          });
-
-          updateMessage?.({
-            role: data.role,
-            content: data.content,
-            uid: data.uid,
-            imgs: [...(data.imgs || []), ...list]
-          });
-        }
-      } catch (error) {
-        console.error('Error processing images:', error);
-      }
-    },
-    [data, updateMessage]
-  );
-
-  const handleOnPaste = (e: any) => {
-    const text = e.clipboardData.getData('text');
-    if (!text) {
-      e.preventDefault();
-      getPasteContent(e);
-    }
-  };
-
-  const handleUpdateImgList = useCallback(
-    (list: { uid: number | string; dataUrl: string }[]) => {
-      updateMessage?.({
-        role: data.role,
-        content: data.content,
-        uid: data.uid,
-        imgs: [...(data.imgs || []), ...list]
-      });
-    },
-    [data, updateMessage]
-  );
-
-  const handleDeleteImg = (uid: number | string) => {
-    const list = _.filter(data.imgs, (item: MessageItem) => item.uid !== uid);
-    updateMessage?.({
-      role: data.role,
-      content: data.content,
-      uid: data.uid,
-      imgs: list
-    });
-  };
-
-  const handleDeleteLastImage = useCallback(() => {
-    if (data.imgs && data.imgs?.length > 0) {
-      const newImgList = [...(data.imgs || [])];
-      const lastImage = newImgList.pop();
-      if (lastImage) {
-        handleDeleteImg(lastImage.uid);
-      }
-    }
-  }, [data.imgs, handleDeleteImg]);
-
-  const handleKeyDown = useCallback(
-    (event: any) => {
-      if (
-        event.key === 'Backspace' &&
-        data.content === '' &&
-        data.imgs &&
-        data.imgs?.length > 0
-      ) {
-        // inputref blur
-        event.preventDefault();
-        handleDeleteLastImage();
-      }
-    },
-    [data, handleDeleteLastImage]
-  );
-
-  const handleClickWrapper = (e: any) => {
-    console.log('e===========', e);
-    e.stopPropagation();
-    e.preventDefault();
-    inputRef.current.focus();
-  };
 
   return (
     <div className="content-item">
@@ -181,71 +38,20 @@ const ContentItem: React.FC<MessageItemProps> = ({
               intl.formatMessage({ id: `playground.${data.role}` })}
           </div>
         )}
-        <div className="actions">
-          {actions.includes('upload') && data.role === Roles.User && (
-            <UploadImg handleUpdateImgList={handleUpdateImgList}></UploadImg>
-          )}
-          {data.content && actions.includes('copy') && (
-            <CopyButton
-              text={data.content}
-              size="small"
-              shape="default"
-              type="text"
-              fontSize="12px"
-            ></CopyButton>
-          )}
-          {actions.includes('delete') && (
-            <Tooltip title={intl.formatMessage({ id: 'common.button.delete' })}>
-              <Button
-                size="small"
-                type="text"
-                onClick={onDelete}
-                icon={<MinusCircleOutlined />}
-              ></Button>
-            </Tooltip>
-          )}
-        </div>
+        <MessageActions
+          data={data}
+          actions={actions}
+          onDelete={onDelete}
+          updateMessage={updateMessage}
+        ></MessageActions>
       </div>
-      {editable ? (
-        <div
-          className={classNames('message-content-input', {
-            'has-img': data.imgs?.length
-          })}
-          onClick={handleClickWrapper}
-        >
-          <ThumbImg
-            editable={editable}
-            dataList={data.imgs || []}
-            onDelete={handleDeleteImg}
-          ></ThumbImg>
-          <Input.TextArea
-            ref={inputRef}
-            value={data.content}
-            variant="filled"
-            autoSize={{ minRows: 1 }}
-            style={{
-              borderRadius: 'var(--border-radius-mini)'
-            }}
-            readOnly={loading}
-            onKeyDown={handleKeyDown}
-            onChange={handleMessageChange}
-            onPaste={handleOnPaste}
-          ></Input.TextArea>
-        </div>
-      ) : (
-        <div
-          className={classNames('content-item-content', {
-            'has-img': data.imgs?.length
-          })}
-        >
-          <ThumbImg
-            editable={editable}
-            dataList={data.imgs || []}
-            onDelete={handleDeleteImg}
-          ></ThumbImg>
-          {data.content && <div className="text">{data.content}</div>}
-        </div>
-      )}
+      <MessageBody
+        editable={editable}
+        data={data}
+        loading={loading}
+        actions={actions}
+        updateMessage={updateMessage}
+      ></MessageBody>
     </div>
   );
 };
diff --git a/src/pages/playground/components/multiple-chat/message-actions.tsx b/src/pages/playground/components/multiple-chat/message-actions.tsx
new file mode 100644
index 00000000..e4a2c296
--- /dev/null
+++ b/src/pages/playground/components/multiple-chat/message-actions.tsx
@@ -0,0 +1,82 @@
+import CopyButton from '@/components/copy-button';
+import {
+  FileMarkdownOutlined,
+  FileTextOutlined,
+  MinusCircleOutlined
+} from '@ant-design/icons';
+import { useIntl } from '@umijs/max';
+import { Button, Tooltip } from 'antd';
+import React, { useCallback } from 'react';
+import { Roles } from '../../config';
+import { MessageItem, MessageItemAction } from '../../config/types';
+import UploadImg from '../upload-img';
+
+interface MessageActionsProps {
+  data: MessageItem;
+  actions: MessageItemAction[];
+  renderMode?: string;
+  renderModeChange?: (value: string) => void;
+  updateMessage?: (message: MessageItem) => void;
+  onDelete?: () => void;
+}
+
+const renderOptions = [
+  { label: 'Markdown', value: 'markdown', icon: <FileMarkdownOutlined /> },
+  { label: 'Plain', value: 'plain', icon: <FileTextOutlined /> }
+];
+
+const MessageActions: React.FC<MessageActionsProps> = ({
+  actions,
+  data,
+  renderMode,
+  renderModeChange,
+  updateMessage,
+  onDelete
+}) => {
+  const intl = useIntl();
+
+  const handleUpdateImgList = useCallback(
+    (list: { uid: number | string; dataUrl: string }[]) => {
+      updateMessage?.({
+        role: data.role,
+        content: data.content,
+        uid: data.uid,
+        imgs: [...(data.imgs || []), ...list]
+      });
+    },
+    [data, updateMessage]
+  );
+
+  return (
+    <>
+      {actions.length > 1 ? (
+        <div className="actions">
+          {actions.includes('upload') && data.role === Roles.User && (
+            <UploadImg handleUpdateImgList={handleUpdateImgList} />
+          )}
+          {data.content && actions.includes('copy') && (
+            <CopyButton
+              text={data.content}
+              size="small"
+              shape="default"
+              type="text"
+              fontSize="12px"
+            />
+          )}
+          {actions.includes('delete') && (
+            <Tooltip title={intl.formatMessage({ id: 'common.button.delete' })}>
+              <Button
+                size="small"
+                type="text"
+                onClick={onDelete}
+                icon={<MinusCircleOutlined />}
+              />
+            </Tooltip>
+          )}
+        </div>
+      ) : null}
+    </>
+  );
+};
+
+export default MessageActions;
diff --git a/src/pages/playground/components/multiple-chat/message-body.tsx b/src/pages/playground/components/multiple-chat/message-body.tsx
new file mode 100644
index 00000000..98269e61
--- /dev/null
+++ b/src/pages/playground/components/multiple-chat/message-body.tsx
@@ -0,0 +1,233 @@
+import MarkdownViewer from '@/components/markdown-viewer';
+import { Input } from 'antd';
+import classNames from 'classnames';
+import _ from 'lodash';
+import React, { useCallback, useMemo, useRef } from 'react';
+import { Roles } from '../../config';
+import { MessageItem, MessageItemAction } from '../../config/types';
+import ThumbImg from '../thumb-img';
+import ThinkContent from './think-content';
+import ThinkParser from './think-parser';
+
+interface MessageBodyProps {
+  data: MessageItem;
+  editable?: boolean;
+  loading?: boolean;
+  showTitle?: boolean;
+  actions?: MessageItemAction[];
+  updateMessage?: (message: MessageItem) => void;
+  onDelete?: () => void;
+}
+
+const MessageBody: React.FC<MessageBodyProps> = ({
+  editable,
+  data,
+  loading,
+  actions,
+  updateMessage
+}) => {
+  const inputRef = useRef<any>(null);
+  const imgCountRef = useRef(0);
+  const thinkerRef = useRef<any>(null);
+
+  const content = useMemo(() => {
+    if (!thinkerRef.current && actions?.includes('markdown')) {
+      thinkerRef.current = new ThinkParser();
+    }
+    if (actions?.includes('markdown')) {
+      return thinkerRef.current.parse(data.content);
+    }
+    return {
+      thought: '',
+      result: data.content
+    };
+  }, [data.content, actions]);
+
+  const getPasteContent = useCallback(
+    async (event: any) => {
+      // @ts-ignore
+      const clipboardData = event.clipboardData || window.clipboardData;
+      const items = clipboardData.items;
+      const imgPromises: Promise<string>[] = [];
+
+      for (let i = 0; i < items.length; i++) {
+        let item = items[i];
+
+        if (item.kind === 'file' && item.type.indexOf('image') !== -1) {
+          const file = item.getAsFile();
+          const imgPromise = new Promise<string>((resolve, reject) => {
+            const reader = new FileReader();
+            reader.onload = function (event) {
+              const base64String = event.target?.result as string;
+              if (base64String) {
+                resolve(base64String);
+              } else {
+                reject('Failed to convert image to base64');
+              }
+            };
+            reader.readAsDataURL(file);
+          });
+          imgPromises.push(imgPromise);
+        } else if (item.kind === 'string') {
+          // string
+        }
+      }
+
+      try {
+        const imgs = await Promise.all(imgPromises);
+        if (imgs.length) {
+          const list = _.map(imgs, (img: string) => {
+            imgCountRef.current += 1;
+            return {
+              uid: imgCountRef.current,
+              dataUrl: img
+            };
+          });
+
+          updateMessage?.({
+            role: data.role,
+            content: data.content,
+            uid: data.uid,
+            imgs: [...(data.imgs || []), ...list]
+          });
+        }
+      } catch (error) {
+        console.error('Error processing images:', error);
+      }
+    },
+    [data, updateMessage]
+  );
+
+  const handleOnPaste = (e: any) => {
+    const text = e.clipboardData.getData('text');
+    if (!text) {
+      e.preventDefault();
+      getPasteContent(e);
+    }
+  };
+
+  const handleDeleteImg = (uid: number | string) => {
+    const list = _.filter(data.imgs, (item: MessageItem) => item.uid !== uid);
+    updateMessage?.({
+      role: data.role,
+      content: data.content,
+      uid: data.uid,
+      imgs: list
+    });
+  };
+
+  const handleMessageChange = (e: any) => {
+    updateMessage?.({
+      imgs: data.imgs || [],
+      role: data.role,
+      content: e.target.value,
+      uid: data.uid
+    });
+  };
+
+  const handleDeleteLastImage = useCallback(() => {
+    if (data.imgs && data.imgs?.length > 0) {
+      const newImgList = [...(data.imgs || [])];
+      const lastImage = newImgList.pop();
+      if (lastImage) {
+        handleDeleteImg(lastImage.uid);
+      }
+    }
+  }, [data.imgs, handleDeleteImg]);
+
+  const handleKeyDown = useCallback(
+    (event: any) => {
+      if (
+        event.key === 'Backspace' &&
+        data.content === '' &&
+        data.imgs &&
+        data.imgs?.length > 0
+      ) {
+        // inputref blur
+        event.preventDefault();
+        handleDeleteLastImage();
+      }
+    },
+    [data, handleDeleteLastImage]
+  );
+  const handleClickWrapper = (e: any) => {
+    e.stopPropagation();
+    e.preventDefault();
+    inputRef.current?.focus();
+  };
+
+  if (!editable) {
+    return (
+      <div
+        className={classNames('content-item-content', {
+          'has-img': data.imgs?.length
+        })}
+      >
+        <ThumbImg
+          editable={editable}
+          dataList={data.imgs || []}
+          onDelete={handleDeleteImg}
+        />
+        {data.content && <div className="text">{data.content}</div>}
+      </div>
+    );
+  }
+
+  return (
+    <div
+      className={classNames('message-content-input', {
+        'has-img': data.imgs?.length
+      })}
+      onClick={handleClickWrapper}
+    >
+      <ThumbImg
+        editable={editable}
+        dataList={data.imgs || []}
+        onDelete={handleDeleteImg}
+      />
+      <>
+        {data.role === Roles.User ? (
+          <Input.TextArea
+            ref={inputRef}
+            value={data.content}
+            variant="filled"
+            autoSize={{ minRows: 1 }}
+            style={{ borderRadius: 'var(--border-radius-mini)' }}
+            readOnly={loading}
+            onKeyDown={handleKeyDown}
+            onChange={handleMessageChange}
+            onPaste={handleOnPaste}
+          />
+        ) : (
+          <>
+            {actions?.includes('markdown') ? (
+              <>
+                <ThinkContent content={content.thought}></ThinkContent>
+                <div style={{ paddingInline: 4 }}>
+                  <MarkdownViewer
+                    content={content.result || ''}
+                    theme="light"
+                  />
+                </div>
+              </>
+            ) : (
+              <Input.TextArea
+                ref={inputRef}
+                value={data.content}
+                variant="filled"
+                autoSize={{ minRows: 1 }}
+                style={{ borderRadius: 'var(--border-radius-mini)' }}
+                readOnly={loading}
+                onKeyDown={handleKeyDown}
+                onChange={handleMessageChange}
+                onPaste={handleOnPaste}
+              />
+            )}
+          </>
+        )}
+      </>
+    </div>
+  );
+};
+
+export default MessageBody;
diff --git a/src/pages/playground/components/multiple-chat/think-content.tsx b/src/pages/playground/components/multiple-chat/think-content.tsx
new file mode 100644
index 00000000..2e70d17e
--- /dev/null
+++ b/src/pages/playground/components/multiple-chat/think-content.tsx
@@ -0,0 +1,26 @@
+import IconFont from '@/components/icon-font';
+import { Button } from 'antd';
+import React from 'react';
+import '../../style/think-content.less';
+
+interface ThinkContentProps {
+  content: string;
+}
+
+const ThinkContent: React.FC<ThinkContentProps> = ({ content }) => {
+  return (
+    <>
+      {content ? (
+        <div className="think-wrapper">
+          <IconFont type="icon-AIzhineng" className="m-l-4" />
+          <Button size="small" type="text">
+            AI Thought...
+          </Button>
+          <div className="think-content">{content}</div>
+        </div>
+      ) : null}
+    </>
+  );
+};
+
+export default ThinkContent;
diff --git a/src/pages/playground/components/multiple-chat/think-parser.ts b/src/pages/playground/components/multiple-chat/think-parser.ts
new file mode 100644
index 00000000..15a231d3
--- /dev/null
+++ b/src/pages/playground/components/multiple-chat/think-parser.ts
@@ -0,0 +1,59 @@
+class ThinkParser {
+  thought: string;
+  result: string;
+  collecting: boolean;
+  lastCheckedIndex: number;
+
+  constructor() {
+    this.thought = '';
+    this.result = '';
+    this.collecting = false;
+    this.lastCheckedIndex = 0;
+  }
+
+  parse(chunk: string) {
+    if (this.lastCheckedIndex < chunk.length) {
+      const currentChunk = chunk.substring(this.lastCheckedIndex);
+
+      if (!this.collecting) {
+        //  find <think> tag
+        let startIndex = currentChunk.indexOf('<think>');
+        if (startIndex !== -1) {
+          // handle text before <think> tag
+          this.result += currentChunk.substring(0, startIndex);
+          // handle thought part
+          this.thought += currentChunk.substring(startIndex + 7);
+          this.collecting = true;
+        } else {
+          // if no <think> tag found, just append the whole chunk to result
+          this.result += currentChunk;
+        }
+      } else {
+        // find </think> tag
+        let endIndex = currentChunk.indexOf('</think>');
+        if (endIndex !== -1) {
+          // handle text before </think> tag
+          this.thought += currentChunk.substring(0, endIndex);
+          // handle result part
+          this.result += currentChunk.substring(endIndex + 8);
+
+          this.collecting = false;
+        } else {
+          this.thought += currentChunk;
+        }
+        this.lastCheckedIndex = chunk.length;
+      }
+    }
+
+    return { thought: this.thought.trim(), result: this.result };
+  }
+
+  reset() {
+    this.thought = '';
+    this.result = '';
+    this.collecting = false;
+    this.lastCheckedIndex = 0;
+  }
+}
+
+export default ThinkParser;
diff --git a/src/pages/playground/config/types.ts b/src/pages/playground/config/types.ts
index 33c3f348..be94461b 100644
--- a/src/pages/playground/config/types.ts
+++ b/src/pages/playground/config/types.ts
@@ -6,7 +6,7 @@ export interface ModelSelectionItem extends Global.BaseOption<string> {
   type?: string;
 }
 
-export type MessageItemAction = 'upload' | 'delete' | 'copy';
+export type MessageItemAction = 'upload' | 'delete' | 'copy' | 'markdown';
 
 export interface MessageItem {
   content: string;
diff --git a/src/pages/playground/style/content-item.less b/src/pages/playground/style/content-item.less
index 9adf5d85..d80535f7 100644
--- a/src/pages/playground/style/content-item.less
+++ b/src/pages/playground/style/content-item.less
@@ -20,6 +20,18 @@
     display: none;
   }
 
+  .actions .mrkd-switch {
+    border-radius: 12px;
+
+    .ant-segmented-thumb,
+    .ant-segmented-item-selected,
+    .ant-segmented-item,
+    .ant-segmented-item::after {
+      border-radius: 10px;
+      overflow: hidden;
+    }
+  }
+
   &:hover {
     .actions {
       display: flex;
diff --git a/src/pages/playground/style/think-content.less b/src/pages/playground/style/think-content.less
new file mode 100644
index 00000000..a435475f
--- /dev/null
+++ b/src/pages/playground/style/think-content.less
@@ -0,0 +1,13 @@
+.think-wrapper {
+  margin-bottom: 16px;
+  color: var(--ant-color-text-tertiary);
+  border-left: 2px solid var(--ant-color-fill-secondary);
+
+  .think-content {
+    white-space: pre-wrap;
+    padding: 6px 4px;
+    background-color: var(--ant-color-fill-tertiary);
+    color: var(--ant-color-text-tertiary);
+    border-radius: var(--border-radius-base);
+  }
+}
diff --git a/src/utils/fetch-chunk-data.ts b/src/utils/fetch-chunk-data.ts
index d0522abb..d23d1036 100644
--- a/src/utils/fetch-chunk-data.ts
+++ b/src/utils/fetch-chunk-data.ts
@@ -27,6 +27,7 @@ const extractJSON = (dataStr: string) => {
 const errorHandler = async (res: any) => {
   try {
     const data = await res.json();
+    console.log('errorHandler:', data);
     return {
       error: true,
       data: data