diff --git a/module/mr/test/lib/mr.unittest.class.php b/module/mr/test/lib/mr.unittest.class.php
index bba3f63da5..883e7c034b 100755
--- a/module/mr/test/lib/mr.unittest.class.php
+++ b/module/mr/test/lib/mr.unittest.class.php
@@ -432,4 +432,29 @@ class mrTest
         $MR = $this->objectModel->fetchByID($MRID);
         return $this->objectModel->apiAcceptMR($MR);
     }
+
+    /**
+     * Test __construct method.
+     *
+     * @param  string $appName
+     * @param  string $rawModule
+     * @access public
+     * @return mixed
+     */
+    public function constructTest(string $appName = '', string $rawModule = 'mr')
+    {
+        global $app;
+        $originalRawModule = $app->rawModule ?? '';
+        
+        try {
+            $app->rawModule = $rawModule;
+            $mrModel = new mrModel($appName);
+            $result = $mrModel->moduleName;
+            $app->rawModule = $originalRawModule;
+            return $result;
+        } catch (Exception $e) {
+            $app->rawModule = $originalRawModule;
+            return 'error: ' . $e->getMessage();
+        }
+    }
 }
diff --git a/module/mr/test/model/construct.php b/module/mr/test/model/construct.php
new file mode 100755
index 0000000000..8184542d3e
--- /dev/null
+++ b/module/mr/test/model/construct.php
@@ -0,0 +1,62 @@
+#!/usr/bin/env php
+<?php
+
+/**
+
+title=测试 mrModel::__construct();
+timeout=0
+cid=0
+
+- 执行mrTest模块的constructTest方法，参数是'', 'mr'  @mr
+- 执行mrTest模块的constructTest方法，参数是'', 'mr'  @mr
+- 执行mrTest模块的constructTest方法，参数是'zentao', 'mr'  @mr
+- 执行mrTest模块的constructTest方法，参数是'', 'pullreq'  @pullreq
+- 执行mrTest模块的constructTest方法，参数是'zentao', 'pullreq'  @pullreq
+
+*/
+
+include dirname(__FILE__, 5) . '/test/lib/init.php';
+
+class mrConstructTest
+{
+    public function __construct()
+    {
+        global $tester;
+        $this->objectModel = $tester->loadModel('mr');
+    }
+
+    /**
+     * Test __construct method.
+     *
+     * @param  string $appName
+     * @param  string $rawModule
+     * @access public
+     * @return mixed
+     */
+    public function constructTest(string $appName = '', string $rawModule = 'mr')
+    {
+        global $app;
+        $originalRawModule = $app->rawModule ?? '';
+        
+        try {
+            $app->rawModule = $rawModule;
+            $mrModel = new mrModel($appName);
+            $result = $mrModel->moduleName;
+            $app->rawModule = $originalRawModule;
+            return $result;
+        } catch (Exception $e) {
+            $app->rawModule = $originalRawModule;
+            return 'error: ' . $e->getMessage();
+        }
+    }
+}
+
+su('admin');
+
+$mrTest = new mrConstructTest();
+
+r($mrTest->constructTest('', 'mr')) && p() && e('mr');
+r($mrTest->constructTest('', 'mr')) && p() && e('mr');
+r($mrTest->constructTest('zentao', 'mr')) && p() && e('mr');
+r($mrTest->constructTest('', 'pullreq')) && p() && e('pullreq');
+r($mrTest->constructTest('zentao', 'pullreq')) && p() && e('pullreq');
\ No newline at end of file