diff --git a/components/dfs/src/dfs_file.c b/components/dfs/src/dfs_file.c
index 646ae58e36..e7071522ce 100644
--- a/components/dfs/src/dfs_file.c
+++ b/components/dfs/src/dfs_file.c
@@ -171,7 +171,7 @@ int dfs_file_ioctl(struct dfs_fd *fd, int cmd, void *args)
             return fd->flags; /* return flags */
         case F_SETFL:
             {
-                int flags = (int)args;
+                int flags = (int)(rt_base_t)args;
                 int mask  = O_NONBLOCK | O_APPEND;
 
                 flags &= mask;
diff --git a/components/dfs/src/poll.c b/components/dfs/src/poll.c
index 6655a8a667..6f83762082 100644
--- a/components/dfs/src/poll.c
+++ b/components/dfs/src/poll.c
@@ -40,7 +40,7 @@ static int __wqueue_pollwake(struct rt_wqueue_node *wait, void *key)
 {
     struct rt_poll_node *pn;
 
-    if (key && !((rt_uint32_t)key & wait->key))
+    if (key && !((rt_ubase_t)key & wait->key))
         return -1;
 
     pn = rt_container_of(wait, struct rt_poll_node, wqn);
diff --git a/components/drivers/sdio/mmcsd_core.c b/components/drivers/sdio/mmcsd_core.c
index d1f5978374..2206960a69 100644
--- a/components/drivers/sdio/mmcsd_core.c
+++ b/components/drivers/sdio/mmcsd_core.c
@@ -595,7 +595,7 @@ static void mmcsd_power_off(struct rt_mmcsd_host *host)
 int mmcsd_wait_cd_changed(rt_int32_t timeout)
 {
     struct rt_mmcsd_host *host;
-    if (rt_mb_recv(&mmcsd_hotpluge_mb, (rt_uint32_t*)&host, timeout) == RT_EOK)
+    if (rt_mb_recv(&mmcsd_hotpluge_mb, (rt_ubase_t *)&host, timeout) == RT_EOK)
     {
         if(host->card == RT_NULL)
         {
@@ -623,7 +623,7 @@ void mmcsd_detect(void *param)
 
     while (1) 
     {
-        if (rt_mb_recv(&mmcsd_detect_mb, (rt_uint32_t*)&host, RT_WAITING_FOREVER) == RT_EOK)
+        if (rt_mb_recv(&mmcsd_detect_mb, (rt_ubase_t *)&host, RT_WAITING_FOREVER) == RT_EOK)
         {
             if (host->card == RT_NULL)
             {
diff --git a/components/net/lwip-2.0.2/src/arch/sys_arch.c b/components/net/lwip-2.0.2/src/arch/sys_arch.c
index 7a92170886..b2abaeab54 100644
--- a/components/net/lwip-2.0.2/src/arch/sys_arch.c
+++ b/components/net/lwip-2.0.2/src/arch/sys_arch.c
@@ -508,7 +508,7 @@ u32_t sys_arch_mbox_fetch(sys_mbox_t *mbox, void **msg, u32_t timeout)
             t = timeout / (1000/RT_TICK_PER_SECOND);
     }
 
-    ret = rt_mb_recv(*mbox, (rt_uint32_t *)msg, t);
+    ret = rt_mb_recv(*mbox, (rt_ubase_t *)msg, t);
 
     if(ret == -RT_ETIMEOUT)
         return SYS_ARCH_TIMEOUT;
@@ -539,7 +539,7 @@ u32_t sys_arch_mbox_tryfetch(sys_mbox_t *mbox, void **msg)
 {
     int ret;
 
-    ret = rt_mb_recv(*mbox, (rt_uint32_t *)msg, 0);
+    ret = rt_mb_recv(*mbox, (rt_ubase_t *)msg, 0);
 
     if(ret == -RT_ETIMEOUT)
         return SYS_ARCH_TIMEOUT;
diff --git a/components/net/lwip-2.0.2/src/netif/ethernetif.c b/components/net/lwip-2.0.2/src/netif/ethernetif.c
index 8b05e592d4..f9a798f594 100644
--- a/components/net/lwip-2.0.2/src/netif/ethernetif.c
+++ b/components/net/lwip-2.0.2/src/netif/ethernetif.c
@@ -329,7 +329,7 @@ static void eth_tx_thread_entry(void* parameter)
 
     while (1)
     {
-        if (rt_mb_recv(&eth_tx_thread_mb, (rt_uint32_t*)&msg, RT_WAITING_FOREVER) == RT_EOK)
+        if (rt_mb_recv(&eth_tx_thread_mb, (rt_ubase_t *)&msg, RT_WAITING_FOREVER) == RT_EOK)
         {
             struct eth_device* enetif;
 
@@ -361,7 +361,7 @@ static void eth_rx_thread_entry(void* parameter)
 
     while (1)
     {
-        if (rt_mb_recv(&eth_rx_thread_mb, (rt_uint32_t*)&device, RT_WAITING_FOREVER) == RT_EOK)
+        if (rt_mb_recv(&eth_rx_thread_mb, (rt_ubase_t *)&device, RT_WAITING_FOREVER) == RT_EOK)
         {
             struct pbuf *p;
 
diff --git a/src/memheap.c b/src/memheap.c
index eb5d710029..aef56e1a74 100644
--- a/src/memheap.c
+++ b/src/memheap.c
@@ -34,7 +34,7 @@
 #define RT_MEMHEAP_MINIALLOC    12
 
 #define RT_MEMHEAP_SIZE         RT_ALIGN(sizeof(struct rt_memheap_item), RT_ALIGN_SIZE)
-#define MEMITEM_SIZE(item)      ((rt_uint32_t)item->next - (rt_uint32_t)item - RT_MEMHEAP_SIZE)
+#define MEMITEM_SIZE(item)      ((rt_ubase_t)item->next - (rt_ubase_t)item - RT_MEMHEAP_SIZE)
 
 /*
  * The initialized memory pool will be: