diff --git a/api/@ohos.account.osAccount.d.ts b/api/@ohos.account.osAccount.d.ts
index 20707b3af7b297c36ada4ee6bf0dae3c1f099f26..25f559d21904f303f76a84baf05d134b2aa1e30d 100644
--- a/api/@ohos.account.osAccount.d.ts
+++ b/api/@ohos.account.osAccount.d.ts
@@ -404,6 +404,39 @@ declare namespace osAccount {
          * @systemapi Hide this for inner system use.
          */
         off(type: 'activate' | 'activating', name: string, callback?: Callback<number>): void;
+
+        /**
+         * Obtain bundle id from uid.
+         *
+         * @since 9
+         * @param uid Indicates the target uid.
+         * @return bundle id.
+         * @systemapi Hide this for inner system use.
+         */
+        getBundleIdFromUid(uid: number, callback: AsyncCallback<number>): void;
+        getBundleIdFromUid(uid: number): Promise<number>;
+
+        /**
+         * Check whether current process belongs to the main os account
+         *
+         * @since 9
+         * @return Returns {@code true} if current process belongs to the main os account;
+         *         returns {@code false} otherwise.
+         * @systemapi Hide this for inner system use.
+         */
+        isMainOsAccount(callback: AsyncCallback<boolean>): void;
+        isMainOsAccount(): Promise<boolean>;
+
+        /**
+         * Query the constraint source type list of the os account
+         *
+         * @since 9
+         * @return Returns the constraint source type infos of the os account;
+         * @permission ohos.permission.MANAGE_LOCAL_ACCOUNTS.
+         * @systemapi Hide this for inner system use.
+         */
+        queryOsAccountConstraintSourceTypes(localId: number, constraint: string, callback: AsyncCallback<Array<ConstraintSourceTypeInfo>>): void;
+        queryOsAccountConstraintSourceTypes(localId: number, constraint: string): Promise<Array<ConstraintSourceTypeInfo>>;
     }
 
     /**
@@ -1365,6 +1398,57 @@ declare namespace osAccount {
          */
         FINGERPRINT_TIP_TOO_SLOW = 5
     }
+
+    /**
+     * Enumerates for constraint source types.
+     *
+     * @name ConstraintSourceType
+     * @since 9
+     * @syscap SystemCapability.Account.OsAccount
+     * @systemapi Hide this for inner system use.
+     */
+    enum ConstraintSourceType {
+        /**
+         * No constraints are set
+         */
+        CONSTRAINT_NOT_EXIST = 0,
+
+        /**
+         * Constraint is set by setOsAccountConstraints
+         */
+        CONSTRAINT_TYPE_BASE = 1,
+
+        /**
+         * Constraint is set by device owner
+         */
+        CONSTRAINT_TYPE_DEVICE_OWNER = 2,
+
+        /**
+         * Constraint is set by profile owner
+         */
+        CONSTRAINT_TYPE_PROFILE_OWNER = 3
+    }
+
+    /**
+     * Provides information about the constraint source type info of an os account.
+     *
+     * @name ConstraintSourceTypeInfo
+     * @since 9
+     * @syscap SystemCapability.Account.OsAccount
+     * @systemapi Hide this for inner system use.
+     */
+    interface ConstraintSourceTypeInfo {
+        /**
+         * Indicates the id of an os account who set the constraint.
+         * When type is CONSTRAINT_NOT_EXIST or CONSTRAINT_TYPE_BASE, localId will be -1.
+         */
+        localId: number;
+
+        /**
+         * Indicates the source type of the constraint.
+         */
+        type: ConstraintSourceType;
+    }
 }
 
 export default osAccount;
\ No newline at end of file