diff --git a/core/parallel_state_processor.go b/core/parallel_state_processor.go
index 952f69aea..3d4e1f825 100644
--- a/core/parallel_state_processor.go
+++ b/core/parallel_state_processor.go
@@ -738,9 +738,6 @@ func (p *ParallelStateProcessor) confirmTxResults(statedb *state.StateDB, gp *Ga
 	// merge slotDB into mainDB
 	statedb.MergeSlotDB(result.slotDB, result.receipt, resultTxIndex, result.result.delayFees)
 
-	// after merge, the slotDB will not accessible, reclaim the resource
-	result.slotDB.PutSyncPool()
-
 	delayGasFee := result.result.delayFees
 	// add delayed gas fee
 	if delayGasFee != nil {
@@ -792,6 +789,8 @@ func (p *ParallelStateProcessor) confirmTxResults(statedb *state.StateDB, gp *Ga
 		}
 		p.txReqExecuteRecord[resultTxIndex]++
 	}
+	// after merge, the slotDB will not accessible, reclaim the resource
+	result.slotDB.PutSyncPool()
 	return result
 }