diff --git a/public/react/src/modules/courses/signin/Signinstatistics/Signinstatistics.js b/public/react/src/modules/courses/signin/Signinstatistics/Signinstatistics.js
index ca3e0286a..9eedb8e3e 100644
--- a/public/react/src/modules/courses/signin/Signinstatistics/Signinstatistics.js
+++ b/public/react/src/modules/courses/signin/Signinstatistics/Signinstatistics.js
@@ -195,7 +195,7 @@ class Signinstatistics extends Component {
 											<Col span={10}><Row type="flex" justify="end">
 												<Col span={8} className={"Signinstatisticsfont"}>显示最近十次签到</Col>
 												<Col span={10}>
-													<Select  defaultValue={"全部"} onChange={(e)=>this.handleChange(e)} style={{width:"130px"}}>
+													<Select  defaultValue={"全部"} onChange={(e)=>this.handleChange(e)} style={{width:"130px"}} className={"Signinstatisticsfontselect"}>
 														{course_groups&&course_groups.map((item,key)=>{
 															return(
 																<Option value={item.id} title={item.name} >{item.name}</Option>
diff --git a/public/react/src/modules/courses/signin/css/Signinstatistics.css b/public/react/src/modules/courses/signin/css/Signinstatistics.css
index f179e80af..298ef9403 100644
--- a/public/react/src/modules/courses/signin/css/Signinstatistics.css
+++ b/public/react/src/modules/courses/signin/css/Signinstatistics.css
@@ -105,7 +105,7 @@
     line-height: 32px  !important;
     height: 32px  !important;
 }
-.ant-select-selection--single .ant-select-selection__rendered{
+.Signinstatisticsfontselect .ant-select-selection--single .ant-select-selection__rendered{
     line-height: 32px  !important;
     height: 32px  !important;
 }