diff --git a/public/react/src/modules/courses/coursesDetail/CoursesLeftNav.js b/public/react/src/modules/courses/coursesDetail/CoursesLeftNav.js
index 601263fe6..7698dfa90 100644
--- a/public/react/src/modules/courses/coursesDetail/CoursesLeftNav.js
+++ b/public/react/src/modules/courses/coursesDetail/CoursesLeftNav.js
@@ -825,9 +825,9 @@ class Coursesleftnav extends Component{
            { is_teacher===true?
                   course_modules===undefined?"":course_modules.map((item,key)=>{
                     return(
-                        <div key={key} 	title={item.name.length<6?"":item.name}>
+                        <div key={key} 	>
                             <a>
-                            <li onClick={(e)=>this.showsandians(e,key,item.category_url,1)}   className={this.props.mainurl===item.category_url&&key===this.props.indexs?"liactive":"clearfix active"}   onMouseLeave={(e)=>this.hidesandian(e,key)}  onMouseEnter={(e)=>this.showsandian(e,key)}>
+                            <li title={item.name.length<7?"":item.name} onClick={(e)=>this.showsandians(e,key,item.category_url,1)}   className={this.props.mainurl===item.category_url&&key===this.props.indexs?"liactive":"clearfix active"}   onMouseLeave={(e)=>this.hidesandian(e,key)}  onMouseEnter={(e)=>this.showsandian(e,key)}>
                                 <a onClick={(e)=>this.showsandians(e,key,item.category_url,1)}  className={ item.second_category===undefined?"fl ml20 pd0":item.second_category.length===0?"fl ml20 pd0":this.state.sandiantypes===key?"fl ml20 pd0 ebebeb":"fl ml20 pd0"}>
                                   {
                                     item.type==="shixun_homework"?<i className={this.props.location.pathname===item.category_url?"color-blue iconfont icon-daima mr10 fl":"iconfont icon-daima mr10 fl"}></i>:
@@ -900,7 +900,7 @@ class Coursesleftnav extends Component{
                                                               ref={provided.innerRef}
                                                               {...provided.draggableProps}
                                                               {...provided.dragHandleProps}
-																														  title={iem.category_name.length<6?"":iem.category_name}
+																														  title={iem.category_name.length<10?"":iem.category_name}
                                                               >
 
                                                                 <a className="fl pl46 pd0  Draggablelichild">
@@ -940,7 +940,7 @@ class Coursesleftnav extends Component{
                    <a >
                    <li className={this.props.mainurl===item.category_url&&key===this.props.indexs?"liactive":"clearfix active"}
                        onClick={(e)=>this.setnavid(e,key,item.id,item.type,item.category_url)}  onMouseEnter={(e)=>this.showsandian(e,key)}
-											 title={item.name.length<6?"":item.name}
+											 title={item.name.length<7?"":item.name}
                    >
                        <a className={ item.second_category===undefined?"fl ml20 pd0":item.second_category.length===0?"fl ml20 pd0":this.state.sandiantypes===key?"fl ml20 pd0 ebebeb":"fl ml20 pd0"}>
                        {
@@ -978,7 +978,7 @@ class Coursesleftnav extends Component{
                          }
                          return(
                            <a >
-                               <li className="clearfix Draggableli" key={index} style={{ width: '244px'}} title={iem.category_name.length<6?"":iem.category_name}>
+                               <li className="clearfix Draggableli" key={index} style={{ width: '244px'}} title={iem.category_name.length<10?"":iem.category_name}>
                                  <a className="fl pl46 pd0 Draggablelichild" onClick={(e)=>this.selectnavids(e,key,iem.category_id,item.type+"child",iem.second_category_url,key)} >
 
                                      {/*<span className="fl ml38 maxwidth155 task-hide">{iem.category_name}</span>*/}