diff --git a/utils/baseRequest.js b/utils/baseRequest.js
index b6fd476..01ad904 100644
--- a/utils/baseRequest.js
+++ b/utils/baseRequest.js
@@ -6,16 +6,21 @@ export default function baseRequest() {
   const account = accountCookie === undefined ? {} : accountCookie;
   const mid = getCookie("mid");
   const b_ts = new Date().getTime();
+  let b_dt = 0;
+  if (/(iPad|iPhone|iPod)/gi.test(navigator.userAgent)) {
+    b_dt = 1;
+  }
   const baseRequest = {
     b_mid: mid ? parseInt(mid, 10) : account?.mid,
     b_ch: "h5",
     b_ts: b_ts,
+    b_dt: b_dt,
     b_token: token,
     b_did:
       typeof window !== "undefined" &&
       typeof window.navigator !== "undefined" &&
       navigator?.userAgent.slice(0, 32),
   };
-  // console.log("baseRequest",baseRequest)
+  // console.log("baseRequest", baseRequest);
   return baseRequest;
 }