diff --git a/awardBE/src/main/java/edu/ncst/award/controller/CaptchaController.java b/awardBE/src/main/java/edu/ncst/award/controller/CaptchaController.java
index 8bf7b14..b03f7b5 100644
--- a/awardBE/src/main/java/edu/ncst/award/controller/CaptchaController.java
+++ b/awardBE/src/main/java/edu/ncst/award/controller/CaptchaController.java
@@ -33,9 +33,14 @@ public class CaptchaController {
         String tempToken = null;
         Boolean tokenIsValid = false;
 
-        // 校验 TOKEN 是否存在 有效
+        // 校验 TOKEN 是否存在
         if (tempTokenCookie != null && tempTokenCookie.getValue() != null && !"".equals(tempTokenCookie.getValue())) {
-            tokenIsValid = stringRedisTemplate.hasKey("tempToken:" + tempTokenCookie.getValue());
+            tempToken = tempTokenCookie.getValue();
+        }
+
+        // 校验 TOKEN 是否有效
+        if (tempToken != null) {
+            tokenIsValid = stringRedisTemplate.hasKey("tempToken:" + tempToken);
         }
 
         // 如果没有 TOKEN 或者 TOKEN 失效都会生成一个新的TOKEN