diff --git a/src/JiShe.CollectBus.Host/appsettings.json b/src/JiShe.CollectBus.Host/appsettings.json
index 9c898b4..a5b2e15 100644
--- a/src/JiShe.CollectBus.Host/appsettings.json
+++ b/src/JiShe.CollectBus.Host/appsettings.json
@@ -130,5 +130,5 @@
   },
   "ServerTagName": "JiSheCollectBus",
   "KafkaReplicationFactor": 3,
-  "NumPartitions": 60
+  "NumPartitions": 30
 }
\ No newline at end of file