diff --git a/frameworks/bridge/arkts_frontend/koala_projects/arkoala-arkts/arkui-ohos/src/handwritten/theme/ArkThemeNativeHelper.ts b/frameworks/bridge/arkts_frontend/koala_projects/arkoala-arkts/arkui-ohos/src/handwritten/theme/ArkThemeNativeHelper.ts
index 99edc2f2616f28e405a95be2437ea2ff9aef060c..ea1a6a62d58676d53e24bd8b43240df00ebdfd1f 100644
--- a/frameworks/bridge/arkts_frontend/koala_projects/arkoala-arkts/arkui-ohos/src/handwritten/theme/ArkThemeNativeHelper.ts
+++ b/frameworks/bridge/arkts_frontend/koala_projects/arkoala-arkts/arkui-ohos/src/handwritten/theme/ArkThemeNativeHelper.ts
@@ -67,6 +67,7 @@ export class ArkThemeNativeHelper {
         SerializeUtils.writeColorArray(thisSerializer, colorArray);
         ArkUIAniModule._CreateAndBindTheme(themeScopeId, themeId,
             thisSerializer.asBuffer(), thisSerializer.length(), colorMode, onThemeScopeDestroy);
+        thisSerializer.release();
 
         // reset local color mode if need
         if (colorMode && colorMode !== ThemeColorMode.SYSTEM) {