diff --git a/htdocs/lib/Study/StudyActivityManager.php b/htdocs/lib/Study/StudyActivityManager.php
index cc0e9d6..f58b8e9 100644
--- a/htdocs/lib/Study/StudyActivityManager.php
+++ b/htdocs/lib/Study/StudyActivityManager.php
@@ -20,6 +20,23 @@ use UElearning\Exception;
  */
 class StudyActivityManager {
     
+    /**
+     * 
+     * @param {Type} $uid 
+     * @param {Type} tid 
+     * @param {Type} mmode 
+     * @return bool 輸入的資料是否存在來新增學習活動記錄
+     */
+    protected function checkDataIsExist($uid, $tid, $mmode) {        
+        		
+        // TODO: 使用者存不存在
+        
+        // TODO: 標的存不存在
+        
+        // TODO: 教材是否存在
+        return true;
+    }
+    
     /**
      * 開始這次學習
      * 
@@ -36,19 +53,17 @@ class StudyActivityManager {
     public function startActivity( $userId, $themeId, $learnTime, $timeForce, 
                             $learnStyle, $learnStyle_force, $materialMode )
     {
-		
-        // TODO: 使用者存不存在
-        
-        // TODO: 標的存不存在
-        
-        // TODO: 教材是否存在
-        
-        // 存入資料庫
-        $db = new Database\DBStudyActivity();
-        $resultId = $db->insertActivity($userId, $themeId, null, null, 
-            $learnTime, 0, $timeForce, $learnStyle, $learnStyle_force, $materialMode);
-        
-        return $resultId;
+
+        if($this->checkDataIsExist($userId, $themeId, $materialMode)) {
+            
+            // 存入資料庫
+            $db = new Database\DBStudyActivity();
+            $resultId = $db->insertActivity($userId, $themeId, null, null, 
+                $learnTime, 0, $timeForce, $learnStyle, $learnStyle_force, $materialMode);
+
+            // 傳回新增後得到的編號
+            return $resultId;
+        }
 	}
     
     /**
@@ -71,6 +86,17 @@ class StudyActivityManager {
             $learnTime, $timeForce, $learnStyle, $learnStyle_force, $materialMode, $lock)
     {
         
+        if($this->checkDataIsExist($userId, $themeId, $materialMode)) {
+            
+            // 存入資料庫
+            $db = new Database\DBStudyActivity();
+            $resultId = $db->insertWillActivity($userId, $themeId, 
+                    $startTime, $expiredTime, $learnTime, $timeForce, 
+                    $learnStyle, $learnStyle_force, $materialMode, $lock);
+
+            // 傳回新增後得到的編號
+            return $resultId;
+        }
     }
     
     // ========================================================================