diff --git a/conf/docklet.conf.template b/conf/docklet.conf.template
index f25da7a..d9f688b 100644
--- a/conf/docklet.conf.template
+++ b/conf/docklet.conf.template
@@ -149,6 +149,8 @@
 
 # MASTER_IPS: all master ips in a cente, depart by ','.
 # e.g:192.168.192.191@master1,192.168.192.192@master2
+# you can also add description to each master.
+# e.g:master1_desc="this is master1"
 # defalut:0.0.0.0@docklet
 # MASTER_IPS=""
 
diff --git a/src/env.py b/src/env.py
index 78d61f6..a9dbaea 100755
--- a/src/env.py
+++ b/src/env.py
@@ -65,4 +65,4 @@ def getenv(key):
     elif key =="AUTH_KEY":
         return os.environ.get("AUTH_KEY","docklet")
     else:
-        return os.environ[key]
+        return os.environ.get(key,"")
diff --git a/web/templates/addCluster.html b/web/templates/addCluster.html
index 0849a2a..3556168 100644
--- a/web/templates/addCluster.html
+++ b/web/templates/addCluster.html
@@ -44,12 +44,16 @@
 				    </div>
 				    <div class="hr-line-dashed"></div>
                     <br/>
-		    		    <div class="form-group"><label class="col-sm-2 control-label">Center Choose</label>
+		    		    <div class="form-group"><label class="col-sm-2 control-label">Location</label>
 					    <div class="col-sm-10"><select id="masterselector" class="form-control">
 						{% for master in masterips %}
 						<option value="{{master.split("@")[0]}}">{{master.split("@")[1]}}</option>
 						{% endfor %}
 					    </select></div>
+				    </div>
+					<br/>
+					<div class="form-group"><label class="col-sm-2 control-label"></label>
+					    <div class="col-sm-10"><p id="masterdesc">{{masterdesc}}</p></div>
 				    </div>
 					<br/>
 				    <div class="form-group"><label class="col-sm-2 control-label">Image Choose</label>
@@ -167,9 +171,13 @@
     <script type="text/javascript">
 		$("select#masterselector").change(function() {
 			var masterip=$(this).children('option:selected').val();
+			var mastername=$(this).children('option:selected').html();
 			console.log(masterip);
 			document.getElementById("form").action="/workspace/add/"+masterip+"/";
 			var host = window.location.host;
+			$.post("http://"+host+"/getmasterdesc/"+mastername+"/", {}, function(data) {
+				$("#masterdesc").html(data);
+			});
 			$.post("http://"+host+"/image/list/"+masterip+"/",{},function(data){
 				var images = data.images;
 				var imagehtml =
diff --git a/web/templates/dashboard.html b/web/templates/dashboard.html
index 0c14a55..0569769 100755
--- a/web/templates/dashboard.html
+++ b/web/templates/dashboard.html
@@ -67,7 +67,7 @@
 				     <button type="button" class="btn btn-xs btn-default">&nbsp;&nbsp;&nbsp;Go&nbsp;&nbsp;&nbsp;</button>
 				 </td>
 			 {% endif %}
-				<td>{{master.split("@")[1]}}</td>
+			 <td><a href="/masterdesc/{{master.split("@")[1]}}/" target="_blank" title="{{desc[master.split("@")[1]]}}">{{master.split("@")[1]}}</a></td>
                          </tr>
                          {% endfor %}
 			 {% endfor %}
diff --git a/web/templates/image_description.html b/web/templates/description.html
similarity index 100%
rename from web/templates/image_description.html
rename to web/templates/description.html
diff --git a/web/web.py b/web/web.py
index 58fae76..03b76bb 100755
--- a/web/web.py
+++ b/web/web.py
@@ -227,6 +227,17 @@ def deleteproxy(clustername,masterip):
     deleteproxyView.masterip = masterip
     return deleteproxyView.as_view()
 
+@app.route("/getmasterdesc/<mastername>/", methods=['POST'])
+@login_required
+def getmasterdesc(mastername):
+    return env.getenv(mastername+"_desc")[1:-1]
+
+@app.route("/masterdesc/<mastername>/", methods=['GET'])
+@login_required
+def masterdesc(mastername):
+    descriptionMasterView.desc=env.getenv(mastername+"_desc")[1:-1]
+    return descriptionMasterView.as_view()
+
 @app.route("/image/list/<masterip>/", methods=['POST'])
 @login_required
 def image_list(masterip):
@@ -662,4 +673,4 @@ if __name__ == '__main__':
         elif opt in ("-p", "--port"):
             webport = int(arg)
 
-app.run(host = webip, port = webport, debug = False, threaded=True)
+app.run(host = webip, port = webport, debug = True, threaded=True)
diff --git a/web/webViews/cluster.py b/web/webViews/cluster.py
index f9201c9..d86e4e3 100755
--- a/web/webViews/cluster.py
+++ b/web/webViews/cluster.py
@@ -12,6 +12,7 @@ class addClusterView(normalView):
     def get(self):
         masterips = dockletRequest.post_to_all()
         images = dockletRequest.post("/image/list/",{},masterips[0].split("@")[0]).get("images")
+        desc = dockletRequest.getdesc(masterips[0].split("@")[1])
         result = dockletRequest.post("/user/usageQuery/")
         quota = result.get("quota")
         usage = result.get("usage")
@@ -46,7 +47,7 @@ class addClusterView(normalView):
                 'disk': defaultdisk
                 }
         if (result):
-            return self.render(self.template_path, user = session['username'],masterips = masterips, images = images, quota = quota, usage = usage, defaultsetting = defaultsetting)
+            return self.render(self.template_path, user = session['username'],masterips = masterips, images = images, quota = quota, usage = usage, defaultsetting = defaultsetting, masterdesc=desc)
         else:
             self.error()
 
@@ -73,8 +74,15 @@ class createClusterView(normalView):
         else:
             return self.render(self.error_path, message = result.get('message'))
 
+class descriptionMasterView(normalView):
+    template_path = "description.html"
+    
+    @classmethod
+    def get(self):
+        return self.render(self.template_path, description=self.desc)
+
 class descriptionImageView(normalView):
-    template_path = "image_description.html"
+    template_path = "description.html"
 
     @classmethod
     def get(self):
diff --git a/web/webViews/dashboard.py b/web/webViews/dashboard.py
index 38eb175..582b716 100644
--- a/web/webViews/dashboard.py
+++ b/web/webViews/dashboard.py
@@ -9,6 +9,7 @@ class dashboardView(normalView):
     @classmethod
     def get(self):
         result = dockletRequest.post_to_all('/cluster/list/')
+        desc = dockletRequest.getalldesc()
         allclusters={}
         for master in result:
             clusters = result[master].get("clusters")
@@ -28,7 +29,7 @@ class dashboardView(normalView):
                 else:
                     self.error()
             allclusters[master] = full_clusters
-        return self.render(self.template_path,  allclusters = allclusters)
+        return self.render(self.template_path,  allclusters = allclusters, desc=desc)
         #else:
         #    self.error()
 
diff --git a/web/webViews/dockletrequest.py b/web/webViews/dockletrequest.py
index 8d446c1..5575093 100644
--- a/web/webViews/dockletrequest.py
+++ b/web/webViews/dockletrequest.py
@@ -21,6 +21,7 @@ def getip(masterip):
 def getname(masterip):
     return masterip.split("@")[1]
 
+
 class dockletRequest():
 
     @classmethod
@@ -59,6 +60,19 @@ class dockletRequest():
         return result
         #except:
             #abort(500)
+    
+    @classmethod
+    def getdesc(self,mastername):
+        return env.getenv(mastername+"_desc")[1:-1]
+
+    @classmethod
+    def getalldesc(self):
+        masterips = self.post_to_all()
+        res={}
+        for masterip in masterips:
+            mastername = getname(masterip)
+            res[mastername]=env.getenv(mastername+"_desc")
+        return res
 
     @classmethod
     def post_to_all(self, url = '/', data={}):