diff --git a/fs/vfs/fs_open.c b/fs/vfs/fs_open.c
index 068c691e35262fad8cf9b0a2926d0197dd101eda..c89c69bf63b5becdaa5f5d988dfe547b09d9b98d 100755
--- a/fs/vfs/fs_open.c
+++ b/fs/vfs/fs_open.c
@@ -192,8 +192,8 @@ int fp_open(char *fullpath, int oflags, mode_t mode)
         }
 #ifdef LOSCFG_FS_VFS_BLOCK_DEVICE
       if (vnode->type == VNODE_TYPE_BLK) {
-          fd = block_proxy(fullpath, oflags);
           VnodeDrop();
+          fd = block_proxy(fullpath, oflags);
           if (fd < 0)
             {
               ret = fd;