diff --git a/convlab2/policy/pg/config.json b/convlab2/policy/pg/config.json
index 480325a980a981ad91f749e3223bdf4bf4ca8ae4..8079b6b7c6ceb5fed5012430ccf8cde1c4b48ee4 100755
--- a/convlab2/policy/pg/config.json
+++ b/convlab2/policy/pg/config.json
@@ -1,7 +1,7 @@
 {
 	"batchsz": 32,
 	"gamma": 0.99,
-	"lr": 0.00001,
+	"lr": 0.0000001,
 	"save_dir": "save",
 	"log_dir": "log",
 	"save_per_epoch": 5,