diff --git a/docs/database/Redis/Redis.md b/docs/database/Redis/Redis.md
index 02f4de14..b6ff963c 100644
--- a/docs/database/Redis/Redis.md
+++ b/docs/database/Redis/Redis.md
@@ -304,7 +304,7 @@ public Object getObjectInclNullById(Integer id) {
     // 从缓存中获取数据
     Object cacheValue = cache.get(id);
     // 缓存为空
-    if (cacheValue != null) {
+    if (cacheValue == null) {
         // 从数据库中获取
         Object storageValue = storage.get(key);
         // 缓存空对象
@@ -367,4 +367,4 @@ public Object getObjectInclNullById(Integer id) {
 
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\ No newline at end of file
+![我的公众号](https://my-blog-to-use.oss-cn-beijing.aliyuncs.com/2019-6/167598cd2e17b8ec.png)