diff --git a/zh-cn/application-dev/reference/apis/js-apis-file-fs.md b/zh-cn/application-dev/reference/apis/js-apis-file-fs.md
index 9bb182ad56fd974c080cf006f1ed7819b96da131..78cf11ceb5a292138913d06b4131801f403d34af 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-file-fs.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-file-fs.md
@@ -474,7 +474,7 @@ mkdirSync(path: string): void
 **示例：**
 
   ```js
-  let dirPath = path + '/testDir';
+  let dirPath = pathDir + '/testDir';
   fs.mkdirSync(dirPath);
   ```
 
@@ -1606,7 +1606,7 @@ listFile(path: string, options?: {
   };
   fs.listFile(pathDir, options).then((filenames) => {
     console.info("listFile succeed");
-    for (let i = 0; i < filenames.size; i++) {
+    for (let i = 0; i < filenames.length; i++) {
       console.info("fileName: %s", filenames[i]);
     }
   }).catch((err) => {
@@ -1657,7 +1657,7 @@ listFile(path: string, options?: {
       console.info("list file failed with error message: " + err.message + ", error code: " + err.code);
     } else {
       console.info("listFile succeed");
-      for (let i = 0; i < filenames.size; i++) {
+      for (let i = 0; i < filenames.length; i++) {
         console.info("filename: %s", filenames[i]);
       }
     }
@@ -1710,7 +1710,7 @@ listFileSync(path: string, options?: {
   };
   let filenames = fs.listFileSync(pathDir, options);
   console.info("listFile succeed");
-  for (let i = 0; i < filenames.size; i++) {
+  for (let i = 0; i < filenames.length; i++) {
     console.info("filename: %s", filenames[i]);
   }
   ```
@@ -1733,6 +1733,8 @@ moveFile(src: string, dest: string, mode?: number): Promise<void>;
 **示例：**
 
   ```js
+  let srcPath = pathDir + '/source.txt';
+  let destPath = pathDir + '/dest.txt';
   fs.moveFile(srcPath, destPath, 0).then(() => {
       console.info("move file succeed");
   }).catch((err) => {
@@ -1760,6 +1762,8 @@ moveFile(src: string, dest: string, mode?: number, callback: AsyncCallback<void>
 **示例：**
 
   ```js
+  let srcPath = pathDir + '/source.txt';
+  let destPath = pathDir + '/dest.txt';
   fs.moveFile(srcPath, destPath, 0, (err) => {
     if (err) {
       console.info("move file failed with error message: " + err.message + ", error code: " + err.code);
@@ -1788,6 +1792,8 @@ moveFile(src: string, dest: string, mode?: number): void;
 **示例：**
 
   ```js
+  let srcPath = pathDir + '/source.txt';
+  let destPath = pathDir + '/dest.txt';
   fs.moveFileSync(srcPath, destPath, 0);
   console.info("move file succeed");
   ```
diff --git a/zh-cn/application-dev/reference/apis/js-apis-file-securityLabel.md b/zh-cn/application-dev/reference/apis/js-apis-file-securityLabel.md
index 3fbf979eaeb97928b5d92528c46067b18fbf3d52..d7110ee4df486c1824d88d152ec98b8325e165e8 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-file-securityLabel.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-file-securityLabel.md
@@ -66,7 +66,8 @@ setSecurityLabel(path:string, type:DataLevel):Promise&lt;void&gt;
 **示例：**
 
   ```js
-  securityLabel.setSecurityLabel(path, "s0").then(() => {
+  let filePath = pathDir + '/test.txt';
+  securityLabel.setSecurityLabel(filePath, "s0").then(() => {
       console.info("setSecurityLabel successfully");
   }).catch((err) => {
       console.info("setSecurityLabel failed with error message: " + err.message + ", error code: " + err.code);
@@ -92,7 +93,8 @@ setSecurityLabel(path:string, type:DataLevel, callback: AsyncCallback&lt;void&gt
 **示例：**
 
   ```js
-  securityLabel.setSecurityLabel(path, "s0", (err) => {
+  let filePath = pathDir + '/test.txt';
+  securityLabel.setSecurityLabel(filePath, "s0", (err) => {
     if (err) {
       console.info("setSecurityLabel failed with error message: " + err.message + ", error code: " + err.code);
     } else {
@@ -119,7 +121,8 @@ setSecurityLabelSync(path:string, type:DataLevel):void
 **示例：**
 
 ```js
-securityLabel.setSecurityLabelSync(path, "s0");
+let filePath = pathDir + '/test.txt';
+securityLabel.setSecurityLabelSync(filePath, "s0");
 ```
 
 ## securityLabel.getSecurityLabel
@@ -145,7 +148,8 @@ getSecurityLabel(path:string):Promise&lt;string&gt;
 **示例：**
 
   ```js
-  securityLabel.getSecurityLabel(path).then((type) => {
+  let filePath = pathDir + '/test.txt';
+  securityLabel.getSecurityLabel(filePath).then((type) => {
       console.log("getSecurityLabel successfully, Label: " + type);
   }).catch((err) => {
       console.log("getSecurityLabel failed with error message: " + err.message + ", error code: " + err.code);
@@ -170,7 +174,8 @@ getSecurityLabel(path:string, callback:AsyncCallback&lt;string&gt;): void
 **示例：**
 
   ```js
-  securityLabel.getSecurityLabel(path, (err, type) => {
+  let filePath = pathDir + '/test.txt';
+  securityLabel.getSecurityLabel(filePath, (err, type) => {
     if (err) {
       console.log("getSecurityLabel failed with error message: " + err.message + ", error code: " + err.code);
     } else {
@@ -201,6 +206,7 @@ getSecurityLabelSync(path:string):string
 **示例：**
 
 ```js
-let type = securityLabel.getSecurityLabelSync(path);
+let filePath = pathDir + '/test.txt';
+let type = securityLabel.getSecurityLabelSync(filePath);
 console.log("getSecurityLabel successfully, Label: " + type);
 ```