diff --git a/ruoyi-ui/src/utils/request.js b/ruoyi-ui/src/utils/request.js
index 48298ece3..8cd0ea673 100644
--- a/ruoyi-ui/src/utils/request.js
+++ b/ruoyi-ui/src/utils/request.js
@@ -42,6 +42,12 @@ service.interceptors.request.use(config => {
       data: typeof config.data === 'object' ? JSON.stringify(config.data) : config.data,
       time: new Date().getTime()
     }
+    const requestSize = Object.keys(JSON.stringify(requestObj)).length; // 请求数据大小
+    const limitSize = 5 * 1024 * 1024; // 限制存放数据5M
+    if (requestSize >= limitSize) {
+      console.warn(`[${config.url}]: ` + '请求数据大小超出允许的5M限制，无法进行防重复提交验证。')
+      return config;
+    }
     const sessionObj = cache.session.getJSON('sessionObj')
     if (sessionObj === undefined || sessionObj === null || sessionObj === '') {
       cache.session.setJSON('sessionObj', requestObj)