diff --git a/litemall-core/src/main/java/org/linlinjava/litemall/core/config/CorsConfig.java b/litemall-core/src/main/java/org/linlinjava/litemall/core/config/CorsConfig.java
index 7467f278..14bb44af 100644
--- a/litemall-core/src/main/java/org/linlinjava/litemall/core/config/CorsConfig.java
+++ b/litemall-core/src/main/java/org/linlinjava/litemall/core/config/CorsConfig.java
@@ -8,11 +8,14 @@ import org.springframework.web.filter.CorsFilter;
 
 @Configuration
 public class CorsConfig {
+    // 当前跨域请求最大有效时长。这里默认30天
+    private long maxAge = 30 * 24 * 60 * 60;
     private CorsConfiguration buildConfig() {
         CorsConfiguration corsConfiguration = new CorsConfiguration();
         corsConfiguration.addAllowedOrigin("*"); // 1 设置访问源地址
         corsConfiguration.addAllowedHeader("*"); // 2 设置访问源请求头
         corsConfiguration.addAllowedMethod("*"); // 3 设置访问源请求方法
+        corsConfiguration.setMaxAge(maxAge);
         return corsConfiguration;
     }