diff --git a/examples/test/mem_test.c b/examples/test/mem_test.c
new file mode 100644
index 0000000000000000000000000000000000000000..595578e1268899a0a0bb377dd0ec9c1125416eb3
--- /dev/null
+++ b/examples/test/mem_test.c
@@ -0,0 +1,105 @@
+#include <stdint.h>
+
+#include <rthw.h>
+#include <rtthread.h>
+
+#define printf    rt_kprintf
+
+void mem_test(uint32_t address, uint32_t size )
+{
+    uint32_t i;
+
+    printf("memtest,address: 0x%08X size: 0x%08X\r\n", address, size);
+
+    /**< 8bit test */
+    {
+        uint8_t * p_uint8_t = (uint8_t *)address;
+        for(i=0; i<size/sizeof(uint8_t); i++)
+        {
+            *p_uint8_t++ = (uint8_t)i;
+        }
+
+        p_uint8_t = (uint8_t *)address;
+        for(i=0; i<size/sizeof(uint8_t); i++)
+        {
+            if( *p_uint8_t != (uint8_t)i )
+            {
+                printf("8bit test fail @ 0x%08X\r\nsystem halt!!!!!",(uint32_t)p_uint8_t);
+                while(1);
+            }
+            p_uint8_t++;
+        }
+        printf("8bit test pass!!\r\n");
+    }
+
+    /**< 16bit test */
+    {
+        uint16_t * p_uint16_t = (uint16_t *)address;
+        for(i=0; i<size/sizeof(uint16_t); i++)
+        {
+            *p_uint16_t++ = (uint16_t)i;
+        }
+
+        p_uint16_t = (uint16_t *)address;
+        for(i=0; i<size/sizeof(uint16_t); i++)
+        {
+            if( *p_uint16_t != (uint16_t)i )
+            {
+                printf("16bit test fail @ 0x%08X\r\nsystem halt!!!!!",(uint32_t)p_uint16_t);
+                while(1);
+            }
+            p_uint16_t++;
+        }
+        printf("16bit test pass!!\r\n");
+    }
+
+    /**< 32bit test */
+    {
+        uint32_t * p_uint32_t = (uint32_t *)address;
+        for(i=0; i<size/sizeof(uint32_t); i++)
+        {
+            *p_uint32_t++ = (uint32_t)i;
+        }
+
+        p_uint32_t = (uint32_t *)address;
+        for(i=0; i<size/sizeof(uint32_t); i++)
+        {
+            if( *p_uint32_t != (uint32_t)i )
+            {
+                printf("32bit test fail @ 0x%08X\r\nsystem halt!!!!!",(uint32_t)p_uint32_t);
+                while(1);
+            }
+            p_uint32_t++;
+        }
+        printf("32bit test pass!!\r\n");
+    }
+
+    /**< 32bit Loopback test */
+    {
+        uint32_t * p_uint32_t = (uint32_t *)address;
+        for(i=0; i<size/sizeof(uint32_t); i++)
+        {
+            *p_uint32_t  = (uint32_t)p_uint32_t;
+            *p_uint32_t++;
+        }
+
+        p_uint32_t = (uint32_t *)address;
+        for(i=0; i<size/sizeof(uint32_t); i++)
+        {
+            if( *p_uint32_t != (uint32_t)p_uint32_t )
+            {
+                printf("32bit Loopback test fail @ 0x%08X", (uint32_t)p_uint32_t);
+                printf(" data:0x%08X \r\n", (uint32_t)*p_uint32_t);
+                printf("system halt!!!!!",(uint32_t)p_uint32_t);
+                while(1);
+            }
+            p_uint32_t++;
+        }
+        printf("32bit Loopback test pass!!\r\n");
+    }
+}
+
+#ifdef RT_USING_FINSH
+#include <finsh.h>
+FINSH_FUNCTION_EXPORT(mem_test, mem_test(0xA0000000, 0x00100000)  );
+#endif