diff --git a/server/light_backtask/task/chain_activity.go b/server/light_backtask/task/chain_activity.go
index e8207bc5..111a2d66 100644
--- a/server/light_backtask/task/chain_activity.go
+++ b/server/light_backtask/task/chain_activity.go
@@ -52,7 +52,7 @@ func (this* chainActivity) processLockAndUnLockEvent(netId int32, lockContractAd
 				sql := fmt.Sprintf(`
 SELECT * FROM t_blockchain_event
 WHERE idx > %d AND idx <= %d AND net_id = %d AND contract_address = ? AND event_name IN (?, ?)
-ORDER BY idx LIMIT 10
+ORDER BY idx LIMIT 1000
 `,
 					lastIdx,
 					maxIdx,