diff --git a/port/rt-thread/main.py b/port/rt-thread/main.py
index 87733382d..7eb334820 100644
--- a/port/rt-thread/main.py
+++ b/port/rt-thread/main.py
@@ -2,8 +2,12 @@ import PikaStdLib
 import pikaRTThread
 
 thread = pikaRTThread.Thread()
+mem = PikaStdLib.MemChecker()
 i = 0
 while i < 3:
     i = i + 1
     print('hello PikaScript!')
     thread.mdelay(500)
+
+print('mem use max:')
+mem.max()