diff --git a/Ubiquitous/RT-Thread_Fusion_XiUOS/aiit_board/xidatong/.config b/Ubiquitous/RT-Thread_Fusion_XiUOS/aiit_board/xidatong/.config
index d47741477..a10457d8d 100644
--- a/Ubiquitous/RT-Thread_Fusion_XiUOS/aiit_board/xidatong/.config
+++ b/Ubiquitous/RT-Thread_Fusion_XiUOS/aiit_board/xidatong/.config
@@ -149,7 +149,7 @@ CONFIG_RT_DFS_ELM_MAX_SECTOR_SIZE=512
 CONFIG_RT_DFS_ELM_REENTRANT=y
 CONFIG_RT_DFS_ELM_MUTEX_TIMEOUT=3000
 CONFIG_RT_USING_DFS_DEVFS=y
-# CONFIG_RT_USING_DFS_ROMFS is not set
+CONFIG_RT_USING_DFS_ROMFS=y
 # CONFIG_RT_USING_DFS_RAMFS is not set
 # CONFIG_RT_USING_DFS_NFS is not set
 
diff --git a/Ubiquitous/RT-Thread_Fusion_XiUOS/aiit_board/xidatong/board/SConscript b/Ubiquitous/RT-Thread_Fusion_XiUOS/aiit_board/xidatong/board/SConscript
index bf9a14de1..805811108 100644
--- a/Ubiquitous/RT-Thread_Fusion_XiUOS/aiit_board/xidatong/board/SConscript
+++ b/Ubiquitous/RT-Thread_Fusion_XiUOS/aiit_board/xidatong/board/SConscript
@@ -15,6 +15,9 @@ if GetDepend('BSP_USING_PHY') and GetDepend('PHY_USING_8720A'):
     src += ['./ports/LAN8720A.c']
 if GetDepend('BSP_USING_SDCARD'):
     src += ['./ports/sdcard_port.c']
+if GetDepend(['RT_USING_DFS_ROMFS']):
+    src += ['ports/romfs.c']
+    src += ['ports/mnt_romfs.c']
 group = DefineGroup('Drivers', src, depend = [''], CPPPATH = CPPPATH, CPPDEFINES=CPPDEFINES)
 
 Return('group')
diff --git a/Ubiquitous/RT-Thread_Fusion_XiUOS/aiit_board/xidatong/board/ports/mnt_romfs.c b/Ubiquitous/RT-Thread_Fusion_XiUOS/aiit_board/xidatong/board/ports/mnt_romfs.c
new file mode 100644
index 000000000..64e931584
--- /dev/null
+++ b/Ubiquitous/RT-Thread_Fusion_XiUOS/aiit_board/xidatong/board/ports/mnt_romfs.c
@@ -0,0 +1,20 @@
+#include <rtthread.h>
+#if defined RT_USING_DFS &&  defined RT_USING_DFS_ROMFS
+#include <dfs_fs.h>
+#include "dfs_romfs.h"
+
+int mnt_init(void)
+{
+    if (dfs_mount(RT_NULL, "/", "rom", 0, &(romfs_root)) == 0)
+    {
+        rt_kprintf("ROM file system initializated!\n");
+    }
+    else
+    {
+        rt_kprintf("ROM file system initializate failed!\n");
+    }
+
+    return 0;
+}
+INIT_ENV_EXPORT(mnt_init);
+#endif
\ No newline at end of file
diff --git a/Ubiquitous/RT-Thread_Fusion_XiUOS/aiit_board/xidatong/board/ports/romfs.c b/Ubiquitous/RT-Thread_Fusion_XiUOS/aiit_board/xidatong/board/ports/romfs.c
new file mode 100644
index 000000000..deaa3c6bc
--- /dev/null
+++ b/Ubiquitous/RT-Thread_Fusion_XiUOS/aiit_board/xidatong/board/ports/romfs.c
@@ -0,0 +1,18 @@
+/* Generated by mkromfs. Edit with caution. */
+#include <rtthread.h>
+#include <dfs_romfs.h>
+
+
+
+static const rt_uint8_t _romfs_root_romfstest_txt[] = {
+0x68,0x65,0x6c,0x6c,0x6f,0x20,0x78,0x69,0x64,0x61,0x74,0x6f,0x6e,0x67,0x0d,0x0a
+};
+
+static const struct romfs_dirent _romfs_root[] = {
+    {ROMFS_DIRENT_DIR, "SD", RT_NULL, 0},
+    {ROMFS_DIRENT_FILE, "romfstest.txt", (rt_uint8_t *)_romfs_root_romfstest_txt, sizeof(_romfs_root_romfstest_txt)/sizeof(_romfs_root_romfstest_txt[0])}
+};
+
+const struct romfs_dirent romfs_root = {
+    ROMFS_DIRENT_DIR, "/", (rt_uint8_t *)_romfs_root, sizeof(_romfs_root)/sizeof(_romfs_root[0])
+};
diff --git a/Ubiquitous/RT-Thread_Fusion_XiUOS/aiit_board/xidatong/board/ports/sdcard_port.c b/Ubiquitous/RT-Thread_Fusion_XiUOS/aiit_board/xidatong/board/ports/sdcard_port.c
index 084394790..62cf5deda 100644
--- a/Ubiquitous/RT-Thread_Fusion_XiUOS/aiit_board/xidatong/board/ports/sdcard_port.c
+++ b/Ubiquitous/RT-Thread_Fusion_XiUOS/aiit_board/xidatong/board/ports/sdcard_port.c
@@ -1,4 +1,3 @@
-
 #include <rtdevice.h>
 #include <rtthread.h>
 #include "drv_gpio.h"
@@ -15,7 +14,11 @@ int sd_mount()
     if (result == MMCSD_HOST_PLUGED)
     {
         /* mount sd card fat partition 1 as root directory */
-        if (dfs_mount("sd0", "/", "elm", 0, 0) == 0)
+        #ifdef RT_USING_DFS_ROMFS
+        if(dfs_mount("sd0", "/SD", "elm", 0, 0) == 0)
+        #else
+        if(dfs_mount("sd0", "/", "elm", 0, 0) == 0)
+        #endif
         {
             LOG_I("File System initialized!\n");
             return RT_EOK;
diff --git a/Ubiquitous/RT-Thread_Fusion_XiUOS/aiit_board/xidatong/rtconfig.h b/Ubiquitous/RT-Thread_Fusion_XiUOS/aiit_board/xidatong/rtconfig.h
index 565db313f..e8716b183 100644
--- a/Ubiquitous/RT-Thread_Fusion_XiUOS/aiit_board/xidatong/rtconfig.h
+++ b/Ubiquitous/RT-Thread_Fusion_XiUOS/aiit_board/xidatong/rtconfig.h
@@ -101,6 +101,7 @@
 #define RT_DFS_ELM_REENTRANT
 #define RT_DFS_ELM_MUTEX_TIMEOUT 3000
 #define RT_USING_DFS_DEVFS
+#define RT_USING_DFS_ROMFS
 
 /* Device Drivers */