diff --git a/src/forge/Settings/Setting.js b/src/forge/Settings/Setting.js
index 7e31a98fc..cc4bcc038 100644
--- a/src/forge/Settings/Setting.js
+++ b/src/forge/Settings/Setting.js
@@ -29,14 +29,15 @@ class Setting extends Component {
       loading:true,
       project_units:['home',"activity","code"],
       divertVisible:false,
-      is_transfering:undefined,
+      is_transfering:undefined
     };
   }
 
   componentDidUpdate=(prevPros)=>{
+
     if(prevPros && this.props && !this.props.checkIfLogin()){
       this.props.history.push("/403")
-      return
+      return;
     }
   }
   componentDidMount = () => {
@@ -233,6 +234,7 @@ class Setting extends Component {
     const { CategoryList, LanguageList, private_check ,loading , divertVisible , is_transfering, transfer } = this.state;
     let mirror = projectDetail && projectDetail.mirror;
     let type = projectDetail && projectDetail.type;
+    const forked_from_project_id = this.props && this.props.projectDetail && this.props.projectDetail.forked_from_project_id;
     return (
       <div>
         <DivertModal 
@@ -265,8 +267,10 @@ class Setting extends Component {
                     <Checkbox
                       checked={private_check}
                       onChange={this.changePrivate}
+                      disabled={forked_from_project_id}
                     >
-                      将仓库设为私有
+                      <span className="color-grey-9">将仓库设为私有</span>
+                      { forked_from_project_id && <span className="color-grey-6">（修改仓库的可见性，将会影响到该仓库下所有Fork仓库的可见性）</span>}
                     </Checkbox>
                   )}
                 </Form.Item>