diff --git a/group/templates/group/group_manage.html b/group/templates/group/group_manage.html
index a3099ab670..719f7e0070 100644
--- a/group/templates/group/group_manage.html
+++ b/group/templates/group/group_manage.html
@@ -44,7 +44,7 @@
 
 <form id="member-add-form" action="{{ SITE_ROOT }}group/memberadd/" method="post" name="member-add-form" class="hide">
     <label>邮箱:</label><br />
-    <input id="added-member-name" name="user_name" value="" /><br />
+    <textarea id="added-member-name" name="user_name"></textarea><br />
     <input type="hidden" id="group_id" name="group_id" value="{{ group.id }}" />
 	<p class="error hide" id="member-add-error">输入不能为空。</p>
     <input type="submit" value="提交" id="member-add-submit" />
diff --git a/group/views.py b/group/views.py
index 2c3d83e442..bb87da75e9 100644
--- a/group/views.py
+++ b/group/views.py
@@ -121,15 +121,22 @@ def group_info(request, group_id):
 def group_add_member(request):
     if request.method == 'POST':
         group_id = request.POST.get('group_id')
-        member_name = request.POST.get('user_name').split(',')[0]
-        if not validate_emailuser(member_name):
-            err_msg = u'用户不存在'
-            return go_error(request, err_msg)
-        else:
-            try:
-                group_id_int = int(group_id)
-            except ValueError:
-                return go_error(request, u'group id 不是有效参数')
+        member_names = request.POST.get('user_name').split(',')
+
+        try:
+            group_id_int = int(group_id)
+        except ValueError:
+            return go_error(request, u'group id 不是有效参数')
+        
+        for member_name in member_names:
+            member_name = member_name.strip(' ')
+            if not member_name:
+                continue
+
+            if not validate_emailuser(member_name):
+                err_msg = u'用户不存在'
+                return go_error(request, err_msg)
+
             try:
                 ccnet_rpc.group_add_member(group_id_int, request.user.username,
                                            member_name)
diff --git a/media/css/seahub.css b/media/css/seahub.css
index 7d544ee682..f0b9b00650 100644
--- a/media/css/seahub.css
+++ b/media/css/seahub.css
@@ -227,7 +227,8 @@ label { display: inline-block; margin:2px 0px; }
     margin-bottom:14px;
 }
 /*repo-share-form*/
-#to_email {
+#to_email,
+#added-member-name {
     width:260px;
     height:80px;
 }