diff --git a/include/rtdef.h b/include/rtdef.h
index dbc0db3b1758d466903f70fa04cb304721853a79..67fda14610359a39b0e8c8b366f1c60821ef88c6 100644
--- a/include/rtdef.h
+++ b/include/rtdef.h
@@ -224,9 +224,11 @@ typedef struct rt_object *rt_object_t;                  /* Type for kernel objec
  *  - Event
  *  - MailBox
  *  - MessageQueue
+ *  - MemHeap
  *  - MemPool
  *  - Device
  *  - Timer
+ *  - Module
  *  - Unknown
  *  - Static
  */
diff --git a/src/module.c b/src/module.c
index 19771137a54765ee57f0be673433349dcf621af1..71929b4462627131759f30592115385833327209 100644
--- a/src/module.c
+++ b/src/module.c
@@ -293,6 +293,13 @@ static void rt_module_init_object_container(struct rt_module *module)
 	module->module_object[RT_Object_Class_MessageQueue].type = RT_Object_Class_MessageQueue;
 #endif
 
+#ifdef RT_USING_MEMHEAP
+	/* initialize object container - memory heap */
+	rt_list_init(&(module->module_object[RT_Object_Class_MemHeap].object_list));
+	module->module_object[RT_Object_Class_MemHeap].object_size = sizeof(struct rt_memheap);
+	module->module_object[RT_Object_Class_MemHeap].type = RT_Object_Class_MemHeap;
+#endif
+
 #ifdef RT_USING_MEMPOOL
 	/* initialize object container - memory pool */
 	rt_list_init(&(module->module_object[RT_Object_Class_MemPool].object_list));
diff --git a/src/rtm.c b/src/rtm.c
index d94c0e30ecc50edcae39969641b8d903c779cac9..38d6df3d3095c5f66d4ca09bcf1ee1163de0b058 100644
--- a/src/rtm.c
+++ b/src/rtm.c
@@ -110,6 +110,16 @@ RTM_EXPORT(rt_mq_recv);
 RTM_EXPORT(rt_mq_control);  
 #endif
 
+#ifdef RT_USING_MEMHEAP
+/*
+ * memory heap interface symbol
+ */
+RTM_EXPORT(rt_memheap_init);
+RTM_EXPORT(rt_memheap_detach);
+RTM_EXPORT(rt_memheap_alloc);
+RTM_EXPORT(rt_memheap_free);
+#endif
+
 #ifdef RT_USING_MEMPOOL
 /*
  * memory pool interface symbol