diff --git a/api/@ohos.dlpPermission.d.ts b/api/@ohos.dlpPermission.d.ts
index 102a58f4561be2f152979f8d847ba3da80e0ab1c..25710ad4cc7213e363898f83e484fa6f11fcd49b 100644
--- a/api/@ohos.dlpPermission.d.ts
+++ b/api/@ohos.dlpPermission.d.ts
@@ -1018,8 +1018,7 @@ declare namespace dlpPermission {
     expireTime?: number;
 
     /**
-     * Action type when the DLP file exceed expire time.
-     *
+     * Define the action to perform when the DLP file has expired.
      * @type { ?ActionType }
      * @syscap SystemCapability.Security.DataLossPrevention
      * @systemapi Hide this for inner system use.
@@ -1503,7 +1502,7 @@ declare namespace dlpPermission {
   }
 
   /**
-   * Represent the DLP file Custom property.
+   * Represents the DLP file Custom property.
    * 
    * @interface CustomProperty
    * @syscap SystemCapability.Security.DataLossPrevention
@@ -1523,7 +1522,7 @@ declare namespace dlpPermission {
   }
 
   /**
-   * Generates a DLP file. This method uses a promise to return the result.
+   * Generates a DLP file.
    *
    * @permission ohos.permission.ENTERPRISE_ACCESS_DLP_FILE
    * @param { number } plaintextFd - FD of the file in plaintext.
@@ -1548,11 +1547,11 @@ declare namespace dlpPermission {
   function generateDlpFileForEnterprise(plaintextFd: number, dlpFd: number, property: DLPProperty, customProperty: CustomProperty): Promise<void>;
 
   /**
-   * Queries the DLP policy. This method uses a promise to return the result.
+   * Queries the DLP file policy.
    * 
    * @permission ohos.permission.ENTERPRISE_ACCESS_DLP_FILE
-   * @param { number } dlpFd - Indicates the file descriptor of the DLP file.
-   * @returns { Promise<string> }.
+   * @param { number } dlpFd FD of the target DLP file.
+   * @returns Promise that returns no value.
    * @throws { BusinessError } 201 - Permission denied.
    * @throws { BusinessError } 202 - Non-system applications use system APIs.
    * @throws { BusinessError } 19100001 - Invalid parameter value.
@@ -1571,12 +1570,12 @@ declare namespace dlpPermission {
   function queryDlpPolicy(dlpFd: number): Promise<string>;
 
   /**
-   * Decrypts a DLP file. This method uses a promise to return the result.
+   * Decrypts a DLP file. This API uses a promise to return the result.
    *
    * @permission ohos.permission.ENTERPRISE_ACCESS_DLP_FILE
-   * @param { number } dlpFd - Indicates the file descriptor of the DLP file.
-   * @param { number } plaintextFd - Indicates the file descriptor of the file in plaintext.
-   * @returns { Promise<void> }.
+   * @param { number } dlpFd FD of the target DLP file.
+   * @param { number } plaintextFd FD of the file decrypted.
+   * @returns Promise that returns no value.
    * @throws { BusinessError } 201 - Permission denied.
    * @throws { BusinessError } 202 - Non-system applications use system APIs.
    * @throws { BusinessError } 19100001 - Invalid parameter value.