diff --git a/components/dfs/src/dfs.c b/components/dfs/src/dfs.c
index cf0b2b0ef99485bbe017d98e83e7d91e2724ce57..12ae8e9d956894d336311ac9be4f823a39a53b60 100644
--- a/components/dfs/src/dfs.c
+++ b/components/dfs/src/dfs.c
@@ -18,6 +18,10 @@
 #include <lwp.h>
 #endif
 
+#ifdef RT_USING_DFS_DEVFS
+#include <libc.h>
+#endif
+
 /* Global variables */
 const struct dfs_filesystem_ops *filesystem_operation_table[DFS_FILESYSTEM_TYPES_MAX];
 struct dfs_filesystem filesystem_table[DFS_FILESYSTEMS_MAX];
@@ -212,6 +216,11 @@ struct dfs_fd *fd_get(int fd)
     struct dfs_fd *d;
     struct dfs_fdtable *fdt;
 
+#ifdef RT_USING_DFS_DEVFS
+    if ((0 <= fd) && (fd <= 2))
+        fd = libc_stdio_get_console();
+#endif
+
     fdt = dfs_fdtable_get();
     fd = fd - DFS_FD_OFFSET;
     if (fd < 0 || fd >= fdt->maxfd)
diff --git a/components/libc/compilers/armlibc/stubs.c b/components/libc/compilers/armlibc/stubs.c
index 6e9f13d143795c1ebb4db8a5c6f4191e030299eb..820daeff392f787d99849df29b87794013824249 100644
--- a/components/libc/compilers/armlibc/stubs.c
+++ b/components/libc/compilers/armlibc/stubs.c
@@ -270,7 +270,10 @@ long _sys_flen(FILEHANDLE fh)
 
 int _sys_istty(FILEHANDLE fh)
 {
-    return 0;
+    if((STDIN <= fh) && (fh <= STDERR))
+        return 1;
+    else
+        return 0;
 }
 
 int remove(const char *filename)