diff --git a/app/controllers/student_works_controller.rb b/app/controllers/student_works_controller.rb
index ab62cbd45..2612510c5 100644
--- a/app/controllers/student_works_controller.rb
+++ b/app/controllers/student_works_controller.rb
@@ -321,11 +321,12 @@ class StudentWorksController < ApplicationController
 
     ActiveRecord::Base.transaction do
       begin
-        revise_attachment = @work.attachments.where(attachtype: 7).reorder("created_on desc").last
-        if revise_attachment.present? && @work.student_works_scores.where("created_at > '#{revise_attachment.created_on}'
-                                                                         and score is not null").count == 0
-          revise_attachment.destroy
-        end
+        # 补交作业附件不覆盖之前上传的附件
+        # revise_attachment = @work.attachments.where(attachtype: 7).reorder("created_on desc").last
+        # if revise_attachment.present? && @work.student_works_scores.where("created_at > '#{revise_attachment.created_on}'
+        #                                                                  and score is not null").count == 0
+        #   revise_attachment.destroy
+        # end
         Attachment.associate_container(params[:attachment_ids], @work.id, @work.class, 7)
         revise_attachment = Attachment.where(attachtype: 7, container_id: @work.id, container_type: "StudentWork").last
         revise_attachment.update_attributes(description: params[:description]) if revise_attachment.present?
diff --git a/public/react/src/modules/courses/busyWork/CommonWorkAppraise.js b/public/react/src/modules/courses/busyWork/CommonWorkAppraise.js
index dc82de540..f41528657 100644
--- a/public/react/src/modules/courses/busyWork/CommonWorkAppraise.js
+++ b/public/react/src/modules/courses/busyWork/CommonWorkAppraise.js
@@ -248,7 +248,9 @@ class CommonWorkAppraise extends Component{
 
           </div> }
 
-          <CommonWorkAppraiseReviseAttachments {...this.state}></CommonWorkAppraiseReviseAttachments>
+          <CommonWorkAppraiseReviseAttachments {...this.state}
+            onAttachmentRemove={this.onAttachmentRemove}
+          ></CommonWorkAppraiseReviseAttachments>
 
             {is_evaluation != true && project_info && project_info.name && <div className={"stud-class-set bor-top-greyE edu-back-white padding20-30"}>
               <div className={"color-grey-6 mb10"}>
diff --git a/public/react/src/modules/courses/busyWork/CommonWorkAppraiseReviseAttachments.js b/public/react/src/modules/courses/busyWork/CommonWorkAppraiseReviseAttachments.js
index d12099d38..b487af487 100644
--- a/public/react/src/modules/courses/busyWork/CommonWorkAppraiseReviseAttachments.js
+++ b/public/react/src/modules/courses/busyWork/CommonWorkAppraiseReviseAttachments.js
@@ -33,7 +33,7 @@ function CommonWorkAppraiseReviseAttachments(props) {
                     {item.title}
                 </a>
                 <span className="color656565 mt2 color-grey-6 font-12 mr8">{item.filesize}</span>
-                {item.delete===true?<i className="font-14 iconfont  icon-guanbi " style={{display: 'none'}} id={item.id} aria-hidden="true" onClick={()=>this.onAttachmentRemove(item.id)}></i>:""}
+                {item.delete===true?<i className="font-14 iconfont  icon-guanbi " style={{display: 'none'}} id={item.id} aria-hidden="true" onClick={()=>this.props.onAttachmentRemove(item.id)}></i>:""}
                 </div>
             )
             })}
diff --git a/public/react/src/modules/page/component/monaco/TPIMonaco.js b/public/react/src/modules/page/component/monaco/TPIMonaco.js
index a9820ad27..0d5eb2d34 100644
--- a/public/react/src/modules/page/component/monaco/TPIMonaco.js
+++ b/public/react/src/modules/page/component/monaco/TPIMonaco.js
@@ -290,6 +290,7 @@ class TPIMonaco extends Component {
 
                 // theme: "vs-dark",
                 theme: "myCoolTheme",
+                insertSpaces: false,
                 fontSize: this.state.cmFontSize
                 
             });