diff --git a/sys/db/core.go b/sys/db/core.go
index 59de21e58..e20b35146 100644
--- a/sys/db/core.go
+++ b/sys/db/core.go
@@ -1,6 +1,7 @@
 package db
 
 import (
+	"sync"
 	"time"
 )
 
@@ -24,6 +25,7 @@ type (
 	//过期数据
 	ModelDataExpired struct {
 		key     string              //主key
+		mu      sync.RWMutex        //安全锁
 		keys    map[string]struct{} //数据集合
 		expired time.Time           //过期时间
 	}
diff --git a/sys/db/dbconn.go b/sys/db/dbconn.go
index 25dda297b..926328ab8 100644
--- a/sys/db/dbconn.go
+++ b/sys/db/dbconn.go
@@ -61,7 +61,9 @@ func (this *DBConn) UpDateModelExpired(key string, childs map[string]struct{}, e
 				exp.keys = make(map[string]struct{})
 			}
 			for k, _ := range childs {
+				exp.mu.Lock()
 				exp.keys[k] = struct{}{}
+				exp.mu.Unlock()
 			}
 		}
 		exp.expired = time.Now().Add(expired)
@@ -107,9 +109,11 @@ func (this *DBConn) scanning() {
 	for _, v := range temp {
 		pipe.Del(ctx, v.key)
 		if v.keys != nil {
+			v.mu.RLock()
 			for k1, _ := range v.keys {
 				pipe.Del(ctx, k1)
 			}
+			v.mu.RUnlock()
 		}
 	}
 	if _, err := pipe.Exec(ctx); err != nil {