diff --git a/api/@ohos.buffer.d.ts b/api/@ohos.buffer.d.ts
index 5052e2092986a0c1f157fb04036fe7f3b758b45d..562ee536c6aa6f6b12289081184a45886dc5df97 100644
--- a/api/@ohos.buffer.d.ts
+++ b/api/@ohos.buffer.d.ts
@@ -2390,6 +2390,18 @@ declare namespace buffer {
      */
     toJSON(): Object;
 
+    /**
+     * Converts this Buffer instance into a JsonElement.
+     *
+     * @returns { jsonx.JsonElement } A new JsonElement containing the Buffer
+     * @syscap SystemCapability.Utils.Lang
+     * @crossplatform
+     * @atomicservice
+     * @since 20
+     * @arkts 1.2
+     */
+    toJSON(): jsonx.JsonElement;
+
     /**
      * Decodes buf to a string according to the specified character encoding in encoding
      *