diff --git a/NewLife.Redis/RedisHash.cs b/NewLife.Redis/RedisHash.cs
index dd9e443..e0c4159 100644
--- a/NewLife.Redis/RedisHash.cs
+++ b/NewLife.Redis/RedisHash.cs
@@ -63,7 +63,7 @@ namespace NewLife.Caching
             value = default(TValue);
 
             var pk = Execute(r => r.Execute<Packet>("HGET", Key, key));
-            if (pk.Total == 0) return false;
+            if (pk == null || pk.Total == 0) return false;
 
             value = FromBytes<TValue>(pk);