diff --git a/src/utils/request.ts b/src/utils/request.ts
index 6db0923..8df1138 100644
--- a/src/utils/request.ts
+++ b/src/utils/request.ts
@@ -69,8 +69,12 @@ axiosInstance.interceptors.request.use((options) => {
         // @ts-ignore
         url = import.meta.env.DEV ? cozePath : (AI_SERVER + cozePath);
     } else if (url?.startsWith('/api/v1/clazz')) {
-        // @ts-ignore
-        url = KC_SERVER + url;
+        // 必须用绝对 URL：否则在 wx/static 等域打开 H5 时 axios 会把 /api/v1/clazz 发到当前域名，落到 SPA index.html（字符串），触发排课 normalize 报错
+        // @ts-ignore vite define
+        const kcBase = KC_SERVER || UC_SERVER;
+        if (kcBase) {
+            url = new URL(url, kcBase.endsWith('/') ? kcBase : `${kcBase}/`).href;
+        }
     }
 
     return {...rest, url, headers: headersObj};
@@ -148,6 +152,15 @@ export default function request({url = '', method = 'get', data, params, ...rest
             resolved.e = getHtyErrUserMessage(res.hty_err, resolved.e ?? baseErrText);
         }
 
+        // 网关未配置 /api/v1/clazz/ 时 SPA 返回 HTML，axios 会得到 string，原先会当作 d 传入业务层触发「排课数据格式异常」
+        const rawBody = resolved.d;
+        if (typeof rawBody === 'string' && /^\s*</.test(rawBody)) {
+            resolved.r = false;
+            resolved.d = undefined;
+            resolved.e =
+                '接口返回了页面而非 JSON（请确认 Nginx 已将 /api/v1/clazz/ 反代到 htykc）';
+        }
+
         return Promise.resolve(resolved);
     })
 };