diff --git a/webapp/models/Hero.php b/webapp/models/Hero.php
index 36ee4ef0..91dcf662 100644
--- a/webapp/models/Hero.php
+++ b/webapp/models/Hero.php
@@ -478,7 +478,15 @@ class Hero extends BaseModel {
                 self::mergeAttr($attr, emptyReplace(json_decode($skinDb['rand_attr'], true), array()));
             }
         }
-        return self::calcAbility($row['hero_id'], $attr);
+        $newAbility = self::calcAbility($row['hero_id'], $attr);
+        $addAbility = array(
+            'hp' => $newAbility['hp'] - $baseAbility['hp'],
+            'attack' => $newAbility['attack'] - $baseAbility['attack'],
+            'defence' => $newAbility['defence'] - $baseAbility['defence'],
+            'block' => $newAbility['block'] - $baseAbility['block'],
+            'critical' => $newAbility['critical'] - $baseAbility['critical'],
+        );
+        return $addAbility;
     }
 
     public static function mergeAttr(&$tarAttrs, $srcAttrs)