diff --git a/interfaces/kits/js/src/mod_fs/ani/ets/@ohos.file.fs.ets b/interfaces/kits/js/src/mod_fs/ani/ets/@ohos.file.fs.ets
index c2ec3ebc5f90649b8685e2cbed1d929284b9ed30..1dfa89cc2a43d1b297c86371377a7699fd390871 100644
--- a/interfaces/kits/js/src/mod_fs/ani/ets/@ohos.file.fs.ets
+++ b/interfaces/kits/js/src/mod_fs/ani/ets/@ohos.file.fs.ets
@@ -207,7 +207,7 @@ class StatInner implements Stat {
 }
 
 type FdOrFile = int | File;
-type PathOrFd = string | int;
+type PathOrFd = string | number;
 type BufferType = string | ArrayBuffer;
 
 class fileIo {
@@ -724,38 +724,29 @@ class fileIo {
     });
   }
 
-  static native truncateSync(file: PathOrFd, len?: long): void;
+  static native truncateSync(file: PathOrFd, len?: number): void;
 
-  static native unlinkSync(path: string): int;
+  static native unlinkSync(path: string): void;
 
-  static unlink(path: string): Promise<int> {
-    return new Promise<int>((resolve: (result: int) => void, reject: (e: BusinessError<void>) => void) => {
-      let promise = taskpool.execute(fileIo.unlinkSync, path);
+  static unlink(path: string): Promise<void> {
+    return new Promise<void>((resolve: (result: undefined) => void,
+      reject: (e: BusinessError<void>) => void): void => {
+      let promise = taskpool.execute((path: string): void => fileIo.unlinkSync(path), path);
       promise.then((ret: NullishType) => {
-        let result = ret as int
-        if (ret === null || ret === undefined) {
-          let err = new BusinessError<void>(-1, "");
-
-          reject(err);
-        } else {
-          resolve(result);
-        }
+        resolve(undefined);
+      }).catch((e: BusinessError): void => {
+        reject(e);
       });
     });
   }
 
-  static unlink(path: string, callback: AsyncCallback<int, void>): void {
-    let promise = taskpool.execute(fileIo.unlinkSync, path);
+  static unlink(path: string, callback: AsyncCallback<void>): void {
+    let promise = taskpool.execute((path: string): void => fileIo.unlinkSync(path), path);
     promise.then((ret: NullishType) => {
-      let err = new BusinessError<void>(-1, "");
-      if (ret === null || ret === undefined) {
-        err.code = -1
-        callback(err, undefined)
-      } else {
-        err.code = 0
-        let r = ret as int;
-        callback(err, r);
-      }
+      let e = new BusinessError(0, "");
+      callback(e, undefined);
+    }).catch((e: BusinessError): void => {
+      callback(e, undefined);
     });
   }
 
diff --git a/interfaces/kits/js/src/mod_fs/properties/ani/unlink_ani.cpp b/interfaces/kits/js/src/mod_fs/properties/ani/unlink_ani.cpp
index 7c8e7a8fdabc3c179fd1a0f266c0c7473270e724..978ea3dd9938afedd72313c1b330df3cda286c3b 100644
--- a/interfaces/kits/js/src/mod_fs/properties/ani/unlink_ani.cpp
+++ b/interfaces/kits/js/src/mod_fs/properties/ani/unlink_ani.cpp
@@ -24,19 +24,18 @@ namespace FileManagement {
 namespace ModuleFileIO {
 namespace ANI {
 
-ani_int UnlinkAni::UnlinkSync(ani_env *env, [[maybe_unused]] ani_class clazz, ani_string path)
+void UnlinkAni::UnlinkSync(ani_env *env, [[maybe_unused]] ani_class clazz, ani_string path)
 {
     auto [succ, pathStr] = TypeConverter::ToUTF8String(env, path);
     if (!succ) {
         HILOGE("Invalid path");
-        return -1;
+        return;
     }
     auto ret = UnlinkCore::DoUnlink(pathStr);
     if (!ret.IsSuccess()) {
         HILOGE("Unlink failed");
-        return -1;
+        return;
     }
-    return 0;
 }
 
 } // namespace ANI
diff --git a/interfaces/kits/js/src/mod_fs/properties/ani/unlink_ani.h b/interfaces/kits/js/src/mod_fs/properties/ani/unlink_ani.h
index 83bb1722ec333bb5699264441ed03c591ecf1202..817b258000b9f13b5dbbc8f498b00cc74e7dc1e0 100644
--- a/interfaces/kits/js/src/mod_fs/properties/ani/unlink_ani.h
+++ b/interfaces/kits/js/src/mod_fs/properties/ani/unlink_ani.h
@@ -25,7 +25,7 @@ namespace ANI {
 
 class UnlinkAni final {
 public:
-    static ani_int UnlinkSync(ani_env *env, [[maybe_unused]] ani_class clazz, ani_string path);
+    static void UnlinkSync(ani_env *env, [[maybe_unused]] ani_class clazz, ani_string path);
 };
 
 } // namespace ANI