diff --git a/module/branch/config/form.php b/module/branch/config/form.php
index f22d05588b..eeced42b2e 100644
--- a/module/branch/config/form.php
+++ b/module/branch/config/form.php
@@ -7,3 +7,9 @@ $config->branch->form->batchedit['branchID'] = array('type' => 'int',    'requir
 $config->branch->form->batchedit['name']     = array('type' => 'string', 'required' => true);
 $config->branch->form->batchedit['desc']     = array('type' => 'string', 'required' => false, 'default' => '');
 $config->branch->form->batchedit['status']   = array('type' => 'string', 'required' => false, 'default' => 'active');
+
+$config->branch->form->mergebranch['createBranch']       = array('type' => 'int',    'required' => false, 'default' => 0);
+$config->branch->form->mergebranch['targetBranch']       = array('type' => 'int',    'required' => false, 'default' => 0);
+$config->branch->form->mergebranch['mergedBranchIDList'] = array('type' => 'string', 'required' => false, 'default' => '');
+$config->branch->form->mergebranch['name']               = array('type' => 'string', 'required' => false, 'default' => '');
+$config->branch->form->mergebranch['desc']               = array('type' => 'string', 'required' => false, 'default' => '');
diff --git a/module/branch/control.php b/module/branch/control.php
index b741691779..3746088c92 100644
--- a/module/branch/control.php
+++ b/module/branch/control.php
@@ -320,13 +320,14 @@ class branch extends control
     }
 
     /**
+     * 将多个分支合并到一个分支。
      * Merge multiple branches into one branch.
      *
      * @param  int    $productID
      * @access public
      * @return object
      */
-    public function mergeBranch($productID)
+    public function mergeBranch(int $productID)
     {
         if($this->post->mergedBranchIDList)
         {
@@ -338,10 +339,11 @@ class branch extends control
                 return $branch != 0 and $branch != $mergeToBranch;
             });
 
-            $mergedBranchIDList = implode(',', $mergedBranches);
-            $mergedBranches     = $this->dao->select('id,name')->from(TABLE_BRANCH)->where('id')->in($mergedBranchIDList)->fetchPairs();
+            $mergedBranches = $this->branch->getPairsByIdList($mergedBranches);
 
-            $targetBranch = $this->branch->mergeBranch($productID, $mergedBranchIDList);
+            $postData     = form::data()->get();
+            $branchIdList = implode(',', array_keys($mergedBranches));
+            $targetBranch = $this->branch->mergeBranch($productID, $branchIdList, $postData);
             if(dao::isError()) return $this->sendError(dao::getError());
 
             $this->loadModel('action')->create('branch', $targetBranch, 'MergedBranch', '', implode(',', $mergedBranches));
diff --git a/module/branch/model.php b/module/branch/model.php
index 6633195302..ce29ffe2b7 100644
--- a/module/branch/model.php
+++ b/module/branch/model.php
@@ -1,4 +1,5 @@
 <?php
+declare(strict_types=1);
 /**
  * The model file of branch module of ZenTaoCMS.
  *
@@ -162,6 +163,19 @@ class branchModel extends model
         return $branches;
     }
 
+    /**
+     * 通过分支ID列表获取分支名称列表。
+     * Get the list of branch name from the branch ID list.
+     *
+     * @param  array  $branchIdList
+     * @access public
+     * @return array
+     */
+    public function getPairsByIdList(array $branchIdList): array
+    {
+        return $this->dao->select('id,name')->from(TABLE_BRANCH)->where('id')->in($branchIdList)->fetchPairs();
+    }
+
     /**
      * Get all pairs.
      *
@@ -726,92 +740,33 @@ class branchModel extends model
     }
 
     /**
+     * 将多个分支合并到一个分支。
      * Merge multiple branches into one branch.
      *
-     * @param  int       $productID
-     * @param  string    $mergedBranches
+     * @param  int      $productID
+     * @param  string   $mergedBranches
+     * @param  object   $data
      * @access public
      * @return int|bool
      */
-    public function mergeBranch($productID, $mergedBranches)
+    public function mergeBranch(int $productID, string $mergedBranches, object $data): int|bool
     {
-        $data = fixer::input('post')->get();
-        if(empty($data->targetBranch) && empty($data->name))
+        if($data->createBranch && empty($data->name))
         {
             $this->changeBranchLanguage($productID);
-            if($this->post->createBranch)
-            {
-                dao::$errors['name'] = sprintf($this->lang->error->notempty, $this->lang->branch->name);
-            }
-            else
-            {
-                dao::$errors['targetBranch'] = sprintf($this->lang->error->notempty, $this->lang->branch->mergeBranch);
-            }
+            dao::$errors['name'] = sprintf($this->lang->error->notempty, $this->lang->branch->name);
             return false;
         }
 
         /* Get the target branch. */
         $targetBranch = $data->createBranch ? $this->create($productID, true) : $data->targetBranch;
-
         if($data->createBranch) $this->loadModel('action')->create('branch', $targetBranch, 'Opened');
 
         /* Branch. */
         $this->dao->delete()->from(TABLE_BRANCH)->where('id')->in($mergedBranches)->exec();
 
-        /* Release. */
-        $this->dao->update(TABLE_RELEASE)->set('branch')->eq($targetBranch)->where('branch')->in($mergedBranches)->exec();
-
-        /* Build. */
-        $this->dao->update(TABLE_BUILD)->set('branch')->eq($targetBranch)->where('branch')->in($mergedBranches)->exec();
-
-        /* Plan. */
-        $this->dao->update(TABLE_PRODUCTPLAN)->set('branch')->eq($targetBranch)->where('branch')->in($mergedBranches)->exec();
-
-        /* Module. */
-        $this->dao->update(TABLE_MODULE)->set('branch')->eq($targetBranch)->where('branch')->in($mergedBranches)->exec();
-
-        /* Story. */
-        $this->dao->update(TABLE_STORY)->set('branch')->eq($targetBranch)->where('branch')->in($mergedBranches)->exec();
-        $this->dao->update(TABLE_PROJECTSTORY)->set('branch')->eq($targetBranch)->where('branch')->in($mergedBranches)->exec();
-
-        /* Bug. */
-        $this->dao->update(TABLE_BUG)->set('branch')->eq($targetBranch)->where('branch')->in($mergedBranches)->exec();
-
-        /* Case. */
-        $this->dao->update(TABLE_CASE)->set('branch')->eq($targetBranch)->where('branch')->in($mergedBranches)->exec();
-
-        /* Linked project or execution. */
-        $linkedProject = $this->dao->select('*')->from(TABLE_PROJECTPRODUCT)
-            ->where('branch')->in($mergedBranches . ",$targetBranch")
-            ->andWhere('product')->eq($productID)
-            ->fetchGroup('project');
-
-        $this->dao->delete()->from(TABLE_PROJECTPRODUCT)->where('branch')->in($mergedBranches . ",$targetBranch")
-            ->andWhere('product')->eq($productID)
-            ->exec();
-        foreach($linkedProject as $projectID => $projectProducts)
-        {
-            $plan = 0;
-            if(!$data->createBranch)
-            {
-                /* Get the linked plan of the target branch. */
-                foreach($projectProducts as $projectProduct)
-                {
-                    if($projectProduct->branch == $targetBranch)
-                    {
-                        $plan = $projectProduct->plan;
-                        break;
-                    }
-                }
-            }
-
-            $projectProduct = new stdClass();
-            $projectProduct->project = $projectID;
-            $projectProduct->product = $productID;
-            $projectProduct->branch  = $targetBranch;
-            $projectProduct->plan    = $plan;
-            $this->dao->insert(TABLE_PROJECTPRODUCT)->data($projectProduct)->autoCheck()->exec();
-        }
+        $this->branchTao->afterMerge($productID, $targetBranch, $mergedBranches, $data);
+        if(dao::isError()) return false;
 
         return $targetBranch;
     }
diff --git a/module/branch/tao.php b/module/branch/tao.php
new file mode 100644
index 0000000000..573d112375
--- /dev/null
+++ b/module/branch/tao.php
@@ -0,0 +1,72 @@
+<?php
+declare(strict_types=1);
+/**
+ * The tao file of branch module of ZenTaoPMS.
+ *
+ * @copyright   Copyright 2009-2023 禅道软件（青岛）有限公司(ZenTao Software (Qingdao) Co., Ltd. www.zentao.net)
+ * @license     ZPL(https://zpl.pub/page/zplv12.html) or AGPL(https://www.gnu.org/licenses/agpl-3.0.en.html)
+ * @author      Shujie Tian <tianshujie@easycorp.ltd>
+ * @package     branch
+ * @link        https://www.zentao.net
+ */
+class branchTao extends branchModel
+{
+    /**
+     * 合并分支后的其他数据处理。
+     * other data process after merge branch.
+     *
+     * @param  int       $productID
+     * @param  int       $targetBranch
+     * @param  string    $mergedBranches
+     * @param  object    $data
+     * @access protected
+     * @return bool
+     */
+    protected function afterMerge(int $productID, int $targetBranch, string $mergedBranches, object $data): bool
+    {
+        $this->dao->update(TABLE_RELEASE)->set('branch')->eq($targetBranch)->where('branch')->in($mergedBranches)->exec();     // Update release branch.
+        $this->dao->update(TABLE_BUILD)->set('branch')->eq($targetBranch)->where('branch')->in($mergedBranches)->exec();       // Update build branch.
+        $this->dao->update(TABLE_PRODUCTPLAN)->set('branch')->eq($targetBranch)->where('branch')->in($mergedBranches)->exec(); // Update plan branch.
+        $this->dao->update(TABLE_MODULE)->set('branch')->eq($targetBranch)->where('branch')->in($mergedBranches)->exec();      // Update module branch.
+        $this->dao->update(TABLE_BUG)->set('branch')->eq($targetBranch)->where('branch')->in($mergedBranches)->exec();         // Update bug branch.
+        $this->dao->update(TABLE_CASE)->set('branch')->eq($targetBranch)->where('branch')->in($mergedBranches)->exec();        // Update case branch.
+
+        /* Update story branch. */
+        $this->dao->update(TABLE_STORY)->set('branch')->eq($targetBranch)->where('branch')->in($mergedBranches)->exec();
+        $this->dao->update(TABLE_PROJECTSTORY)->set('branch')->eq($targetBranch)->where('branch')->in($mergedBranches)->exec();
+
+        /* Linked project or execution. */
+        $linkedProject = $this->dao->select('*')->from(TABLE_PROJECTPRODUCT)
+            ->where('branch')->in($mergedBranches . ",$targetBranch")
+            ->andWhere('product')->eq($productID)
+            ->fetchGroup('project');
+
+        $this->dao->delete()->from(TABLE_PROJECTPRODUCT)->where('branch')->in($mergedBranches . ",$targetBranch")
+            ->andWhere('product')->eq($productID)
+            ->exec();
+        foreach($linkedProject as $projectID => $projectProducts)
+        {
+            $plan = 0;
+            if($data->createBranch) continue;
+
+            /* Get the linked plan of the target branch. */
+            foreach($projectProducts as $projectProduct)
+            {
+                if($projectProduct->branch == $targetBranch)
+                {
+                    $plan = $projectProduct->plan;
+                    break;
+                }
+            }
+
+            $projectProduct = new stdClass();
+            $projectProduct->project = $projectID;
+            $projectProduct->product = $productID;
+            $projectProduct->branch  = $targetBranch;
+            $projectProduct->plan    = $plan;
+            $this->dao->insert(TABLE_PROJECTPRODUCT)->data($projectProduct)->autoCheck()->exec();
+        }
+
+        return !dao::isError();
+    }
+}