diff --git a/components/fs/fs.c b/components/fs/fs.c
index 66ed8af6..e9a38e50 100644
--- a/components/fs/fs.c
+++ b/components/fs/fs.c
@@ -29,7 +29,9 @@
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 #include "fs_operations.h"
+#ifdef LOSCFG_SUPPORT_FATFS
 #include "fatfs.h"
+#endif
 #include "dirent.h"
 #include "errno.h"
 #include "fcntl.h"
@@ -158,16 +160,20 @@ static size_t GetCanonicalPath(const char *cwd, const char *path, char *buf, siz
 
 static void InitMountInfo(void)
 {
+#if (LOSCFG_SUPPORT_FATFS == 1)
     extern struct MountOps g_fatfsMnt;
     extern struct FileOps g_fatfsFops;
     g_fsmap[0].fileSystemtype = strdup("fat");
     g_fsmap[0].fsMops = &g_fatfsMnt;
     g_fsmap[0].fsFops = &g_fatfsFops;
+#endif
+#if (LOSCFG_SUPPORT_LITTLEFS == 1)
     extern struct MountOps g_lfsMnt;
     extern struct FileOps g_lfsFops;
     g_fsmap[1].fileSystemtype = strdup("littlefs");
     g_fsmap[1].fsMops = &g_lfsMnt;
     g_fsmap[1].fsFops = &g_lfsFops;
+#endif
 }
 
 static struct FsMap *MountFindfs(const char *fileSystemtype)
diff --git a/components/fs/littlefs/BUILD.gn b/components/fs/littlefs/BUILD.gn
index 02230191..e5a715d7 100644
--- a/components/fs/littlefs/BUILD.gn
+++ b/components/fs/littlefs/BUILD.gn
@@ -30,6 +30,8 @@
 static_library("littlefs") {
   sources = [
     "lfs_api.c",
+    "//third_party/littlefs/lfs.c",
+    "//third_party/littlefs/lfs_util.c",
   ]
 
   include_dirs = [
diff --git a/components/fs/littlefs/lfs_api.c b/components/fs/littlefs/lfs_api.c
index 4388109f..a4c10e6d 100644
--- a/components/fs/littlefs/lfs_api.c
+++ b/components/fs/littlefs/lfs_api.c
@@ -39,7 +39,7 @@ struct FileOpInfo g_fsOp[LFS_MAX_MOUNT_SIZE] = {0};
 static LittleFsHandleStruct g_handle[LITTLE_FS_MAX_OPEN_FILES] = {0};
 struct dirent g_nameValue;
 static pthread_mutex_t g_FslocalMutex = PTHREAD_MUTEX_INITIALIZER;
-static const char *const g_littlefsMntName[LFS_MAX_MOUNT_SIZE] = {"/a","/b","/c"};
+static const char *g_littlefsMntName[LFS_MAX_MOUNT_SIZE] = {"/a","/b","/c"};
 
 LittleFsHandleStruct *LfsAllocFd(const char *fileName, int *fd)
 {
@@ -165,6 +165,18 @@ struct FileOpInfo *AllocMountRes(const char* target, struct FileOps *fileOps)
     return NULL;
 }
 
+int SetDefaultMountPath(int pathNameIndex, const char* target)
+{
+    if (pathNameIndex >= LFS_MAX_MOUNT_SIZE) {
+        return VFS_ERROR;
+    }
+    
+    pthread_mutex_lock(&g_FslocalMutex);    
+    g_littlefsMntName[pathNameIndex] = strdup(target);
+    pthread_mutex_unlock(&g_FslocalMutex);
+    return VFS_OK;
+}
+
 struct FileOpInfo *GetMountRes(const char *target, int *mountIndex)
 {
     pthread_mutex_lock(&g_FslocalMutex);
diff --git a/components/fs/littlefs/lfs_api.h b/components/fs/littlefs/lfs_api.h
index 0222cf93..44af2f48 100644
--- a/components/fs/littlefs/lfs_api.h
+++ b/components/fs/littlefs/lfs_api.h
@@ -117,6 +117,7 @@ int LfsClose(int fd);
 int LfsRename(const char *oldName, const char *newName);
 int LfsStat(const char *path, struct stat *buf);
 int LfsFsync(int fd);
+int SetDefaultMountPath(int pathNameIndex, const char* target);
 
 const struct FsMap *MountFindfs(const char *filesystemtype);
 
diff --git a/kernel/include/los_config.h b/kernel/include/los_config.h
index 011fe472..66c23244 100644
--- a/kernel/include/los_config.h
+++ b/kernel/include/los_config.h
@@ -583,6 +583,9 @@ extern UINT8 *m_aucSysMem0;
 #define LOSCFG_KERNEL_TRACE                                 0
 #endif
 
+#ifndef LOSCFG_SUPPORT_LITTLEFS
+#define LOSCFG_SUPPORT_LITTLEFS                             1
+#endif
 /**
  * @ingroup los_config
  * Configuration trace tool