diff --git a/o2web/source/x_component_Selector/Identity.js b/o2web/source/x_component_Selector/Identity.js
index d6b0793fb434a0b60db9ffab20b52c25d4002741..56651a871e7abe62257018878bb228201bac99ff 100644
--- a/o2web/source/x_component_Selector/Identity.js
+++ b/o2web/source/x_component_Selector/Identity.js
@@ -495,9 +495,11 @@ MWF.xApplication.Selector.Identity.ItemCategory = new Class({
         }
     },
     clickItem: function( callback ){
-        if (this._hasChild()){
+        if (this._hasChild() && !this.loading){
             var firstLoaded = !this.loaded;
+            this.loading = true;
             this.loadSub(function(){
+                this.loading = false;
                 if( firstLoaded ){
                     if( !this.selector.isFlatCategory ){
                         this.children.setStyles({"display": "block", "height": "auto"});
diff --git a/o2web/source/x_component_Selector/IdentityWidthDuty.js b/o2web/source/x_component_Selector/IdentityWidthDuty.js
index 5e4c5cae4489a1d113087bdfe5de8136023b249d..e0d340772b05dfac3a1dca35e7b155e22ba1e41b 100644
--- a/o2web/source/x_component_Selector/IdentityWidthDuty.js
+++ b/o2web/source/x_component_Selector/IdentityWidthDuty.js
@@ -193,8 +193,8 @@ MWF.xApplication.Selector.IdentityWidthDuty.ItemCategory = new Class({
         this.iconNode.setStyle("background-image", "url("+"../x_component_Selector/$Selector/"+style+"/icon/companyicon.png)");
     },
     loadSub: function(callback){
-        if (!this.loaded  && !this.loading){
-            this.loading = true;
+        if (!this.loaded  && !this.loadingsub){
+            this.loadingsub = true;
             if (this.selector.options.units.length){
                 var action = MWF.Actions.get("x_organization_assemble_express");
                 var data = {"name":this.data.name, "unit":""};
@@ -234,7 +234,7 @@ MWF.xApplication.Selector.IdentityWidthDuty.ItemCategory = new Class({
                         if (i>=count){
                             if (!this.loaded) {
                                 this.loaded = true;
-                                this.loading = false;
+                                this.loadingsub = false;
                                 this.itemLoaded = true;
                                 if (callback) callback();
                             }
@@ -259,7 +259,7 @@ MWF.xApplication.Selector.IdentityWidthDuty.ItemCategory = new Class({
                             if (i>=count){
                                 if (!this.loaded) {
                                     this.loaded = true;
-                                    this.loading = false;
+                                    this.loadingsub = false;
                                     this.itemLoaded = true;
                                     if (callback) callback();
                                 }
@@ -279,7 +279,7 @@ MWF.xApplication.Selector.IdentityWidthDuty.ItemCategory = new Class({
                         }
                     }.bind(this));
                     this.loaded = true;
-                    this.loading = false;
+                    this.loadingsub = false;
                     if (callback) callback();
                 }.bind(this), null, this.data.name);
             }
diff --git a/o2web/source/x_component_Selector/Unit.js b/o2web/source/x_component_Selector/Unit.js
index c69d022bd7b903b8684e1e5ad7684c958533df1a..0f8eabd257c628beac77afec187a433992ab2345 100644
--- a/o2web/source/x_component_Selector/Unit.js
+++ b/o2web/source/x_component_Selector/Unit.js
@@ -510,7 +510,8 @@ MWF.xApplication.Selector.Unit.Item = new Class({
         }
     },
     loadSubItems: function( callback ){
-        if (!this.loaded){
+        if (!this.loaded && !this.loading){
+            this.loading = true;
             if (!this.children){
                 this.children = new Element("div", {
                     "styles": this.selector.css.selectorItemCategoryChildrenNode
@@ -529,6 +530,7 @@ MWF.xApplication.Selector.Unit.Item = new Class({
                     }
                 }.bind(this));
                 this.loaded = true;
+                this.loading = false;
                 if(callback)callback();
             }.bind(this), null, this.data.distinguishedName);
         }else{
@@ -734,7 +736,8 @@ MWF.xApplication.Selector.Unit.SearchItem = new Class({
     },
     loadSubItems: function( callback ){
         //只是为了在isFlatCategory模式下，加载全称用的，否则用继承的就可以
-        if (!this.loaded){
+        if (!this.loaded && !this.loading){
+            this.loading = true;
             if (!this.children){
                 this.children = new Element("div", {
                     "styles": this.selector.css.selectorItemCategoryChildrenNode
@@ -760,6 +763,7 @@ MWF.xApplication.Selector.Unit.SearchItem = new Class({
                     }
                 }.bind(this));
                 this.loaded = true;
+                this.loading = false;
                 if(callback)callback();
             }.bind(this), null, this.data.distinguishedName);
         }else{
diff --git a/o2web/source/x_component_Selector/UnitWithType.js b/o2web/source/x_component_Selector/UnitWithType.js
index e2e0b65de253137867ebb9c034f81ff0ef0accff..f3e3f081607470612647ae2f02d113fa69bfc069 100644
--- a/o2web/source/x_component_Selector/UnitWithType.js
+++ b/o2web/source/x_component_Selector/UnitWithType.js
@@ -183,7 +183,8 @@ MWF.xApplication.Selector.UnitWithType.Item = new Class({
         }
     },
     loadSubItems: function(callback){
-        if (!this.loaded){
+        if (!this.loaded && !this.loading){
+            this.loading = true;
             if (!this.children){
                 this.children = new Element("div", {
                     "styles": this.selector.css.selectorItemCategoryChildrenNode
@@ -207,6 +208,7 @@ MWF.xApplication.Selector.UnitWithType.Item = new Class({
                 if(callback)callback()
             }.bind(this));
             this.loaded = true;
+            this.loading = false;
         }else{
             this.children.setStyle("display", "block");
         }