diff --git a/planner/core/plan_cost_ver2.go b/planner/core/plan_cost_ver2.go
index b53d53c845c45..29524a345a3e1 100644
--- a/planner/core/plan_cost_ver2.go
+++ b/planner/core/plan_cost_ver2.go
@@ -593,6 +593,11 @@ func (p *PhysicalIndexJoin) getIndexJoinCostVer2(taskType property.TaskType, opt
 	// Use an empirical value batchRatio to handle this now.
 	// TODO: remove this empirical value.
 	batchRatio := 6.0
+	if _, isIndexLookUp := probe.(*PhysicalIndexLookUpReader); isIndexLookUp {
+		// IndexJoin + IndexLookUp has the risks to cause massive double-read requests,
+		// set the batchRatio to a lower value in this case for safety.
+		batchRatio = 1.5
+	}
 	probeCost := divCostVer2(mulCostVer2(probeChildCost, buildRows), batchRatio)
 
 	p.planCostVer2 = sumCostVer2(startCost, buildChildCost, buildFilterCost, buildTaskCost, divCostVer2(sumCostVer2(probeCost, probeFilterCost, hashTableCost), probeConcurrency))