diff --git a/docs/database/redis/redis-questions-01.md b/docs/database/redis/redis-questions-01.md
index 38cdf965..f8496252 100644
--- a/docs/database/redis/redis-questions-01.md
+++ b/docs/database/redis/redis-questions-01.md
@@ -322,7 +322,7 @@ io-threads 4 #官网建议4核的机器建议设置为2或3个线程，8核的
 Redis 自带了给缓存数据设置过期时间的功能，比如：
 
 ```bash
-127.0.0.1:6379> exp key 60 # 数据在 60s 后过期
+127.0.0.1:6379> expire key 60 # 数据在 60s 后过期
 (integer) 1
 127.0.0.1:6379> setex key 60 value # 数据在 60s 后过期 (setex:[set] + [ex]pire)
 OK