diff --git a/module/gitlab/control.php b/module/gitlab/control.php
index 7646ce74b2..dd06f754eb 100644
--- a/module/gitlab/control.php
+++ b/module/gitlab/control.php
@@ -417,16 +417,25 @@ class gitlab extends control
 
     /**
      * AJAX: Get MR user pairs to select assignee_ids and reviewer_ids.
+     * Attention: The user must be a member of the GitLab project.
      *
      * @param  int    $gitlabID
+     * @param  int    $projectID
      * @access public
      * @return void
      */
-    public function ajaxGetMRUserPairs($gitlabID)
+    public function ajaxGetMRUserPairs($gitlabID, $projectID)
     {
         if(!$gitlabID) return $this->send(array('message' => array()));
 
-        $users    = $this->gitlab->getUserIdRealnamePairs($gitlabID);
+        $bindedUsers     = $this->gitlab->getUserIdRealnamePairs($gitlabID);
+        $rawProjectUsers = $this->gitlab->apiGetProjectUsers($gitlabID, $projectID);
+        $users           = array();
+        foreach($rawProjectUsers as $rawProjectUser)
+        {
+            if(!empty($bindedUsers[$rawProjectUser->id])) $users[$rawProjectUser->id] = $bindedUsers[$rawProjectUser->id];
+        }
+
         $options  = "<option value=''></option>";
         foreach($users as $index => $user)
         {
diff --git a/module/gitlab/model.php b/module/gitlab/model.php
index aa8cc892df..1a87c51110 100644
--- a/module/gitlab/model.php
+++ b/module/gitlab/model.php
@@ -470,6 +470,20 @@ class gitlabModel extends model
         return json_decode(commonModel::http($url));
     }
 
+    /**
+     * Get project users.
+     *
+     * @param  int    $gitlabID
+     * @param  int    $projectID
+     * @access public
+     * @return void
+     */
+    public function apiGetProjectUsers($gitlabID, $projectID)
+    {
+        $url = sprintf($this->getApiRoot($gitlabID), "/projects/$projectID/users");
+        return json_decode(commonModel::http($url));
+    }
+
     /**
      * Get single branch by API.
      *
diff --git a/module/mr/control.php b/module/mr/control.php
index 5acb340fa0..ba743b6ba6 100644
--- a/module/mr/control.php
+++ b/module/mr/control.php
@@ -67,12 +67,21 @@ class mr extends control
         $targetBranchList = array();
         foreach($branchList as $branch) $targetBranchList[$branch] = $branch;
 
+        /* Fetch user list both in Zentao and current GitLab project. */
+        $bindedUsers     = $this->gitlab->getUserIdRealnamePairs($MR->gitlabID);
+        $rawProjectUsers = $this->gitlab->apiGetProjectUsers($MR->gitlabID, $MR->targetProject);
+        $users           = array();
+        foreach($rawProjectUsers as $rawProjectUser)
+        {
+            if(!empty($bindedUsers[$rawProjectUser->id])) $users[$rawProjectUser->id] = $bindedUsers[$rawProjectUser->id];
+        }
+
         $gitlabUsers = $this->gitlab->getUserAccountIdPairs($MR->gitlabID);
 
         $this->view->title            = $this->lang->mr->edit;
         $this->view->MR               = $MR;
         $this->view->targetBranchList = $targetBranchList;
-        $this->view->users            = array("" => "") + $this->loadModel('gitlab')->getUserIdRealnamePairs($MR->gitlabID);
+        $this->view->users            = array("" => "") + $users;
         $this->view->assignee         = zget($gitlabUsers, $MR->assignee, '');
         $this->view->reviewer         = zget($gitlabUsers, $MR->reviewer, '');
 
@@ -150,6 +159,21 @@ class mr extends control
         echo 'success';
     }
 
+    /**
+     * Accept a MR.
+     *
+     * @param  int    $MRID
+     * @access public
+     * @return void
+     */
+    public function accept($MRID)
+    {
+        $MR = $this->mr->getByID($MRID);
+        if(isset($MR->gitlabID)) $rawMR = $this->mr->apiAcceptMR($MR->gitlabID, $MR->targetProject, $MR->mriid);
+        if(isset($rawMR->state) and $rawMR->state == 'merged') return array('result' => 'success', 'message' => $this->lang->mr->mergeSuccess);
+        return array('result' => 'fail', 'message' => $this->lang->mr->mergeFailed);
+    }
+
     /**
      * AJAX: Get MR target projects.
      *
diff --git a/module/mr/js/create.js b/module/mr/js/create.js
index 98583c829e..2194a15d88 100644
--- a/module/mr/js/create.js
+++ b/module/mr/js/create.js
@@ -11,19 +11,7 @@ $(function()
             $('#sourceProject').html('').append(response);
             $('#sourceProject').chosen().trigger("chosen:updated");;
         });
-
-        var assignee = $("#assignee").parents('td').find('select[name*=assignee]');
-        var reviewer = $("#reviewer").parents('td').find('select[name*=reviewer]');
-        usersUrl = createLink('gitlab', 'ajaxgetmruserpairs', "gitlabID=" + gitlabID);
-        $.get(usersUrl, function(response)
-        {
-            assignee.html('').append(response);
-            assignee.chosen().trigger("chosen:updated");;
-            reviewer.html('').append(response);
-            reviewer.chosen().trigger("chosen:updated");;
-        });
-
-    });
+   });
 
     $('#sourceProject,#targetProject').change(function()
     {
@@ -48,4 +36,21 @@ $(function()
             $('#targetProject').chosen().trigger("chosen:updated");;
         });
     });
+
+    $('#targetProject').change(function()
+    {
+        targetProject = $(this).val();
+        var assignee = $("#assignee").parents('td').find('select[name*=assignee]');
+        var reviewer = $("#reviewer").parents('td').find('select[name*=reviewer]');
+        usersUrl = createLink('gitlab', 'ajaxgetmruserpairs', "gitlabID=" + gitlabID + "&projectID=" + targetProject);
+        $.get(usersUrl, function(response)
+        {
+            assignee.html('').append(response);
+            assignee.chosen().trigger("chosen:updated");;
+            reviewer.html('').append(response);
+            reviewer.chosen().trigger("chosen:updated");;
+        });
+    });
+
+
 });
diff --git a/module/mr/lang/zh-cn.php b/module/mr/lang/zh-cn.php
index 0498e9afd2..9a83adbd96 100644
--- a/module/mr/lang/zh-cn.php
+++ b/module/mr/lang/zh-cn.php
@@ -30,7 +30,7 @@ $lang->mr->statusList['merged'] = '已合并';
 $lang->mr->mergeStatusList = array();
 $lang->mr->mergeStatusList['checking']         = '检查中';
 $lang->mr->mergeStatusList['can_be_merged']    = '可合并';
-$lang->mr->mergeStatusList['cannot_be_merged'] = '不可合并';
+$lang->mr->mergeStatusList['cannot_be_merged'] = '不可自动合并';
 
 $lang->mr->description   = '描述';
 $lang->mr->confirmDelete = '确认删除该合并请求吗？';
@@ -68,6 +68,10 @@ $lang->mr->hasConflicts   = "存在合并冲突";
 $lang->mr->hasNoConflict  = "可以合并请求";
 $lang->mr->mergeByManual  = "此合并请求可以手动合并，请使用以下";
 $lang->mr->commandLine    = "合并命令";
+$lang->mr->acceptMR       = "合并";
+$lang->mr->mergeFailed    = "无法合并，请核对合并请求状态";
+$lang->mr->mergeSuccess   = "已成功合并";
+
 
 /**
  * Merge Command Document.
@@ -80,7 +84,7 @@ $lang->mr->commandLine    = "合并命令";
  * %s mr::target_branch
  */
 $lang->mr->commandDocument = <<< EOD
-<div class='detail-title'>在本地检出、审核和合并</div>
+<div class='detail-title'>在本地检出、审核和手动合并</div>
 <div class='detail-content'>
   <p>
     第 1 步. 获取并查看此合并请求的分支
diff --git a/module/mr/model.php b/module/mr/model.php
index 1cba029e8f..bdb58b44dc 100644
--- a/module/mr/model.php
+++ b/module/mr/model.php
@@ -153,15 +153,16 @@ class mrModel extends model
 
         /* Update MR in GitLab. */
         $newMR = new stdclass;
-        $newMR->title        = $MR->title;
-        $newMR->description  = $MR->description;
-        $newMR->assignee     = $MR->assignee;
-        $newMR->reviewer     = $MR->reviewer;
-        $newMR->targetBranch = $MR->targetBranch;
+        $newMR->title         = $MR->title;
+        $newMR->description   = $MR->description;
+        $newMR->assignee_ids  = $MR->assignee;
+        $newMR->reviewer_ids  = $MR->reviewer;
+        $newMR->target_branch = $MR->targetBranch;
 
         $oldMR = $this->getByID($MRID);
 
-        $this->apiUpdateMR($oldMR->gitlabID, $oldMR->targetProject, $oldMR->mriid, $newMR);
+        /* Known issue: `reviewer_ids` takes no effect. */
+        $rawMR = $this->apiUpdateMR($oldMR->gitlabID, $oldMR->targetProject, $oldMR->mriid, $newMR);
 
         /* Change gitlab user ID to zentao account. */
         $gitlabUsers  = $this->gitlab->getUserIdAccountPairs($oldMR->gitlabID);
@@ -173,6 +174,7 @@ class mrModel extends model
             ->where('id')->eq($MRID)
             ->autoCheck()
             ->exec();
+        $MR = $this->getByID($MRID);
 
         if(dao::isError()) return array('result' => 'fail', 'message' => dao::getError());
         return array('result' => 'success', 'message' => $this->lang->saveSuccess, 'locate' => helper::createLink('mr', 'browse'));
@@ -314,8 +316,8 @@ class mrModel extends model
      */
     public function apiAcceptMR($gitlabID, $projectID, $MRID)
     {
-        $url = sprintf($this->gitlab->getApiRoot($gitlabID), "/projects/$projectID/merge_requests/$MRID");
-        return json_decode(commonModel::http($url, $data, $options = array(CURLOPT_CUSTOMREQUEST => 'PUT')));
+        $url = sprintf($this->gitlab->getApiRoot($gitlabID), "/projects/$projectID/merge_requests/$MRID/merge");
+        return json_decode(commonModel::http($url, array(), $options = array(CURLOPT_CUSTOMREQUEST => 'PUT')));
     }
 
     /**
diff --git a/module/mr/view/view.html.php b/module/mr/view/view.html.php
index b5f7c68ca4..89cada7c09 100644
--- a/module/mr/view/view.html.php
+++ b/module/mr/view/view.html.php
@@ -29,6 +29,9 @@
             <div><?php echo $lang->mr->from . html::a($sourceProjectURL, $sourceProjectName . ":" . $MR->sourceBranch, "_blank", "class='btn btn-link btn-active-text' style='color: blue'") . $lang->mr->to . html::a($targetProjectURL, $targetProjectName . ":" . $MR->targetBranch, "_blank", "class='btn btn-link btn-active-text' style='color: blue'");?></div>
           </div>
           <div class="detail-content article-content">
+            <strong><?php echo $lang->mr->status;?></strong>
+            <?php echo zget($lang->mr->statusList, $MR->status);?>
+            <br>
             <?php if(isset($rawMR->head_pipeline->status)):?>
               <div>
                 <strong><?php echo "{$lang->mr->pipeline}{$lang->mr->status}";?></strong>
@@ -51,8 +54,12 @@
           </div>
         </div>
       </div>
+      <?php if($rawMR->state == 'opened'):?>
       <div class="cell"><?php echo sprintf($lang->mr->commandDocument, $httpRepoURL, $MR->sourceBranch, $branchPath, $MR->targetBranch, $branchPath, $MR->targetBranch);?></div>
+      <?php endif;?>
     </div>
   </div>
+  <br>
+  <?php if($rawMR->state == 'opened' and !$rawMR->has_conflicts) echo html::linkButton('<i class="icon icon-checked"></i> ' . $lang->mr->acceptMR, inlink( 'accept', "mr=$MR->id"), 'self', '', 'btn btn-wide btn-primary');?>
 <?php endif;?>
 <?php include '../../common/view/footer.html.php';?>