diff --git a/syscall/fs_syscall.c b/syscall/fs_syscall.c
index 94e42e10..5d3f4cc7 100644
--- a/syscall/fs_syscall.c
+++ b/syscall/fs_syscall.c
@@ -502,6 +502,30 @@ int SysExecve(const char *fileName, char *const *argv, char *const *envp)
 }
 #endif
 
+int SysFchdir(int fd)
+{
+    int ret;
+    int sysFd;
+    struct file *file = NULL;
+
+    sysFd = GetAssociatedSystemFd(fd);
+    if (sysFd < 0) {
+        return -EBADF;
+    }
+
+    ret = fs_getfilep(sysFd, &file);
+    if (ret < 0) {
+        return -get_errno();
+    }
+
+    ret = chdir(file->f_path);
+    if (ret < 0) {
+        ret = -get_errno();
+    }
+
+    return ret;
+}
+
 int SysChdir(const char *path)
 {
     int ret;
diff --git a/syscall/los_syscall.h b/syscall/los_syscall.h
index 51abfde2..0a7edc1a 100644
--- a/syscall/los_syscall.h
+++ b/syscall/los_syscall.h
@@ -231,6 +231,7 @@ extern int SysSymlinkat(const char *target, int dirfd, const char *linkpath);
 extern ssize_t SysReadlinkat(int dirfd, const char *pathname, char *buf, size_t bufsize);
 extern int SysUnlink( const char *pathname);
 extern int SysExecve(const char *fileName, char *const *argv, char *const *envp);
+extern int SysFchdir(int fd);
 extern int SysChdir(const char *path);
 extern int SysUtimensat(int fd, const char *path, struct timespec times[2], int flag);
 extern int SysFchmodat(int fd, const char *path, mode_t mode, int flag);
diff --git a/syscall/syscall_lookup.h b/syscall/syscall_lookup.h
index d2181aa8..89bf894e 100644
--- a/syscall/syscall_lookup.h
+++ b/syscall/syscall_lookup.h
@@ -47,6 +47,7 @@ SYSCALL_HAND_DEF(__NR_execve, SysExecve, int, ARG_NUM_3)
 #endif
 
 SYSCALL_HAND_DEF(__NR_sysinfo, SysInfo, int, ARG_NUM_1)
+SYSCALL_HAND_DEF(__NR_fchdir, SysFchdir, int, ARG_NUM_1)
 SYSCALL_HAND_DEF(__NR_chdir, SysChdir, int, ARG_NUM_1)
 SYSCALL_HAND_DEF(__NR_utimensat, SysUtimensat, int, ARG_NUM_4)
 SYSCALL_HAND_DEF(__NR_fchmodat, SysFchmodat, int, ARG_NUM_4)
diff --git a/testsuites/unittest/fs/BUILD.gn b/testsuites/unittest/fs/BUILD.gn
index d907e799..0e26f4bf 100644
--- a/testsuites/unittest/fs/BUILD.gn
+++ b/testsuites/unittest/fs/BUILD.gn
@@ -211,8 +211,11 @@ sources_full = [
   "jffs/full/it_test_fs_jffs_002.cpp",
   "jffs/full/it_test_fs_jffs_003.cpp",
   "jffs/full/it_test_fs_jffs_004.cpp",
-  "jffs/full/it_test_fs_jffs_102.cpp",
-  "jffs/full/it_test_fs_jffs_103.cpp",
+  "jffs/full/it_test_fs_jffs_100.cpp",
+  "jffs/full/it_test_fs_jffs_101.cpp",
+  "jffs/full/it_test_fs_jffs_106.cpp",
+  "jffs/full/it_test_fs_jffs_112.cpp",
+  "jffs/full/it_test_fs_jffs_113.cpp",
   "jffs/full/It_jffs_001.cpp",
   "jffs/full/It_jffs_002.cpp",
   "jffs/full/It_jffs_003.cpp",
diff --git a/testsuites/unittest/fs/jffs/It_vfs_jffs.h b/testsuites/unittest/fs/jffs/It_vfs_jffs.h
index 56415cc3..30d525a7 100644
--- a/testsuites/unittest/fs/jffs/It_vfs_jffs.h
+++ b/testsuites/unittest/fs/jffs/It_vfs_jffs.h
@@ -271,8 +271,13 @@ void ItTestFsJffs001(void);
 void ItTestFsJffs002(void);
 void ItTestFsJffs003(void);
 void ItTestFsJffs004(void);
+void ItTestFsJffs100(void);
+void ItTestFsJffs101(void);
 void ItTestFsJffs102(void);
 void ItTestFsJffs103(void);
+void ItTestFsJffs106(void);
+void ItTestFsJffs112(void);
+void ItTestFsJffs113(void);
 VOID ItJffs001(VOID);
 VOID ItJffs002(VOID);
 VOID ItJffs003(VOID);
diff --git a/testsuites/unittest/fs/jffs/smoke/it_test_fs_jffs_100.cpp b/testsuites/unittest/fs/jffs/full/it_test_fs_jffs_100.cpp
similarity index 99%
rename from testsuites/unittest/fs/jffs/smoke/it_test_fs_jffs_100.cpp
rename to testsuites/unittest/fs/jffs/full/it_test_fs_jffs_100.cpp
index ca3fca14..d21b1ca9 100644
--- a/testsuites/unittest/fs/jffs/smoke/it_test_fs_jffs_100.cpp
+++ b/testsuites/unittest/fs/jffs/full/it_test_fs_jffs_100.cpp
@@ -28,7 +28,7 @@
  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
-#include "It_fs_jffs.h"
+#include "It_vfs_jffs.h"
 
 static int TestCase(void)
 {
diff --git a/testsuites/unittest/fs/jffs/smoke/it_test_fs_jffs_101.cpp b/testsuites/unittest/fs/jffs/full/it_test_fs_jffs_101.cpp
similarity index 92%
rename from testsuites/unittest/fs/jffs/smoke/it_test_fs_jffs_101.cpp
rename to testsuites/unittest/fs/jffs/full/it_test_fs_jffs_101.cpp
index 6d481031..cc56a689 100644
--- a/testsuites/unittest/fs/jffs/smoke/it_test_fs_jffs_101.cpp
+++ b/testsuites/unittest/fs/jffs/full/it_test_fs_jffs_101.cpp
@@ -28,7 +28,7 @@
  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
-#include "It_fs_jffs.h"
+#include "It_vfs_jffs.h"
 
 #define TEST_STRLEN 30
 
@@ -56,6 +56,16 @@ static int TestCase(void)
     fd = open(pathname2, O_DIRECTORY);
     ICUNIT_GOTO_EQUAL(ret, JFFS_NO_ERROR, ret, EXIT);
 
+    /* EBADF */
+    ret = fchdir(-1);
+    ICUNIT_GOTO_NOT_EQUAL(ret, JFFS_NO_ERROR, ret, EXIT1);
+
+    ret = errno;
+    ICUNIT_GOTO_EQUAL(ret, EBADF, ret, EXIT1);
+
+    ret = chdir(pathname);
+    ICUNIT_GOTO_EQUAL(ret, JFFS_NO_ERROR, ret, EXIT1);
+
     pret = getcwd(buf1, TEST_STRLEN);
     ICUNIT_GOTO_NOT_EQUAL(pret, NULL, pret, EXIT1);
     ICUNIT_GOTO_STRING_EQUAL(buf1, pathname, buf1, EXIT1);
diff --git a/testsuites/unittest/fs/jffs/smoke/it_test_fs_jffs_106.cpp b/testsuites/unittest/fs/jffs/full/it_test_fs_jffs_106.cpp
similarity index 85%
rename from testsuites/unittest/fs/jffs/smoke/it_test_fs_jffs_106.cpp
rename to testsuites/unittest/fs/jffs/full/it_test_fs_jffs_106.cpp
index 47723827..202b3ecc 100644
--- a/testsuites/unittest/fs/jffs/smoke/it_test_fs_jffs_106.cpp
+++ b/testsuites/unittest/fs/jffs/full/it_test_fs_jffs_106.cpp
@@ -28,7 +28,7 @@
  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
-#include "It_fs_jffs.h"
+#include "It_vfs_jffs.h"
 
 #define TEST_STR "abcdefghijk"
 
@@ -41,20 +41,30 @@ static int TestCase(void)
     CHAR buf[JFFS_STANDARD_NAME_LENGTH] = TEST_STR;
     CHAR str[JFFS_STANDARD_NAME_LENGTH] = "";
     FILE *ptr = NULL;
-    fd = open(pathname1, O_CREAT | O_RDWR, 0777);
+
+    fd = open(pathname1, O_CREAT, 0777);
     ICUNIT_GOTO_NOT_EQUAL(fd, -1, fd, EXIT);
-    len = write(fd, buf, JFFS_STANDARD_NAME_LENGTH);
-    ICUNIT_GOTO_NOT_EQUAL(len, -1, len, EXIT);
+
     ret = close(fd);
     ICUNIT_GOTO_NOT_EQUAL(ret, -1, ret, EXIT1);
-    ptr = freopen(pathname1, "rb", stdin);
+
+    ptr = freopen(pathname1, "w+", stdin);
     ICUNIT_GOTO_NOT_EQUAL(ptr, NULL, ptr, EXIT1);
-    ret = scanf_s("%s", JFFS_STANDARD_NAME_LENGTH, str); 
-    ICUNIT_GOTO_NOT_EQUAL(ret, 0, ret, EXIT1);
-    ret = strcmp(buf, str);
+
+    ret = fwrite(buf, JFFS_STANDARD_NAME_LENGTH, 1, ptr);
+    ICUNIT_GOTO_NOT_EQUAL(ret, -1, ret, EXIT1);
+
+    ret = fclose(ptr);
     ICUNIT_GOTO_EQUAL(ret, 0, ret, EXIT1);
 
-    fclose(ptr);
+    fd = open(pathname1, O_RDWR, 0777);
+    ret = read(fd, str, JFFS_STANDARD_NAME_LENGTH);
+
+    ret = close(fd);
+    ICUNIT_GOTO_NOT_EQUAL(ret, -1, ret, EXIT1);
+
+    ret = strcmp(buf, str);
+    ICUNIT_GOTO_EQUAL(ret, 0, ret, EXIT1);
 
     ret = unlink(pathname1);
     ICUNIT_GOTO_EQUAL(ret, 0, ret, EXIT);
diff --git a/testsuites/unittest/fs/jffs/smoke/it_test_fs_jffs_112.cpp b/testsuites/unittest/fs/jffs/full/it_test_fs_jffs_112.cpp
similarity index 99%
rename from testsuites/unittest/fs/jffs/smoke/it_test_fs_jffs_112.cpp
rename to testsuites/unittest/fs/jffs/full/it_test_fs_jffs_112.cpp
index f9739353..8782e61a 100644
--- a/testsuites/unittest/fs/jffs/smoke/it_test_fs_jffs_112.cpp
+++ b/testsuites/unittest/fs/jffs/full/it_test_fs_jffs_112.cpp
@@ -28,7 +28,7 @@
  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
-#include "It_fs_jffs.h"
+#include "It_vfs_jffs.h"
 
 static int TestCase(void)
 {
diff --git a/testsuites/unittest/fs/jffs/smoke/it_test_fs_jffs_113.cpp b/testsuites/unittest/fs/jffs/full/it_test_fs_jffs_113.cpp
similarity index 98%
rename from testsuites/unittest/fs/jffs/smoke/it_test_fs_jffs_113.cpp
rename to testsuites/unittest/fs/jffs/full/it_test_fs_jffs_113.cpp
index 1e65fc74..1f92e148 100644
--- a/testsuites/unittest/fs/jffs/smoke/it_test_fs_jffs_113.cpp
+++ b/testsuites/unittest/fs/jffs/full/it_test_fs_jffs_113.cpp
@@ -28,15 +28,15 @@
  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
-#include "It_fs_jffs.h"
+#include "It_vfs_jffs.h"
+#include <pthread.h>
 
 static FILE *g_filep;
 #define NUM 64
 #define COUNT 10
 
-void *DoChild()
+void *DoChild(void *)
 {
-    int fd = 0;
     int ret, count;
     char buf[NUM];
 
diff --git a/testsuites/unittest/fs/jffs/vfs_jffs_test.cpp b/testsuites/unittest/fs/jffs/vfs_jffs_test.cpp
index 8010040b..57fd4d93 100644
--- a/testsuites/unittest/fs/jffs/vfs_jffs_test.cpp
+++ b/testsuites/unittest/fs/jffs/vfs_jffs_test.cpp
@@ -1043,6 +1043,28 @@ HWTEST_F(VfsJffsTest, ItTestFsJffs004, TestSize.Level0)
     ItTestFsJffs004();
 }
 
+/* *
+ * @tc.name: ItTestFsJffs100
+ * @tc.desc: function for VfsJffsTest
+ * @tc.type: FUNC
+ * @tc.require: AR000EEMQ9
+ */
+HWTEST_F(VfsJffsTest, ItTestFsJffs100, TestSize.Level0)
+{
+    ItTestFsJffs100();
+}
+
+/* *
+ * @tc.name: ItTestFsJffs101
+ * @tc.desc: function for VfsJffsTest
+ * @tc.type: FUNC
+ * @tc.require: AR000EEMQ9
+ */
+HWTEST_F(VfsJffsTest, ItTestFsJffs101, TestSize.Level0)
+{
+    ItTestFsJffs101();
+}
+
 /* *
  * @tc.name: ItTestFsJffs102
  * @tc.desc: function for VfsJffsTest
@@ -1064,6 +1086,40 @@ HWTEST_F(VfsJffsTest, ItTestFsJffs103, TestSize.Level0)
 {
     ItTestFsJffs103();
 }
+
+/* *
+ * @tc.name: ItTestFsJffs106
+ * @tc.desc: function for VfsJffsTest
+ * @tc.type: FUNC
+ * @tc.require: AR000EEMQ9
+ */
+HWTEST_F(VfsJffsTest, ItTestFsJffs106, TestSize.Level0)
+{
+    ItTestFsJffs106();
+}
+
+/* *
+ * @tc.name: ItTestFsJffs112
+ * @tc.desc: function for VfsJffsTest
+ * @tc.type: FUNC
+ * @tc.require: AR000EEMQ9
+ */
+HWTEST_F(VfsJffsTest, ItTestFsJffs112, TestSize.Level0)
+{
+    ItTestFsJffs112();
+}
+
+/* *
+ * @tc.name: ItTestFsJffs113
+ * @tc.desc: function for VfsJffsTest
+ * @tc.type: FUNC
+ * @tc.require: AR000EEMQ9
+ */
+HWTEST_F(VfsJffsTest, ItTestFsJffs113, TestSize.Level0)
+{
+    ItTestFsJffs113();
+}
+
 /* *
  * @tc.name: IT_JFFS_002
  * @tc.desc: function for VfsJffsTest