diff --git a/sceen/totalOfLargePassengerFlow.gd b/sceen/totalOfLargePassengerFlow.gd
index a648067..fc2db02 100644
--- a/sceen/totalOfLargePassengerFlow.gd
+++ b/sceen/totalOfLargePassengerFlow.gd
@@ -307,9 +307,17 @@ func startGeneratePeopleAtCD() -> void:
 	$AllTimer/generatePeopleCEntranceTimer.start()
 	$AllTimer/generatePeopleDEntranceTimer.start()
 
+func reduceInboundPassengerFlowAtA() -> void:
+	$AllTimer/generatePeopleAEntranceTimer.wait_time = 4
+	$AllTimer/generatePeopleAtBLowerStepTimer.wait_time = 6
+	$AllTimer/generatePeopleAtBInboundGateArea.wait_time = 3
+	allGeneratePeopleAtDownPlatform = allGeneratePeopleAtDownPlatform.slice(16, allGeneratePeopleAtDownPlatform.size())
+	for child in allGeneratePeopleAtDownPlatform :
+		child.queue_free()
+	
+
 func stopGeneratePeopleAtA() -> void:
 	$AllTimer/generatePeopleAEntranceTimer.stop()
-	$AllTimer/generatePeopleAtBTicketingArea.stop()
 	$AllTimer/generatePeopleAtBInboundGateArea.stop()
 
 func stopGeneratePeopleAtB() -> void:
@@ -325,6 +333,8 @@ func stopGeneratePeopleAtD() -> void:
 ##A入口生成
 var totalOfAEntrance=0
 func generatePeopleAtAEntrance() -> void:
+	if totalOfAEntrance > 30:
+		$AllTimer/generatePeopleAEntranceTimer.wait_time = 3
 	if $AllAreaDetection/APassageAreaDetection.passPeopleCount< 1 and currentActiveCameraOfLarge != Camera_name.APassage:
 		generatePeopleAPassage()
 	if $AllAreaDetection/TicketingLfetAreaDetection.waitPeopleCount< 1 and currentActiveCameraOfLarge != Camera_name.BTVM:
@@ -382,6 +392,7 @@ func generatePeopleAtBTicketingArea() -> void:
 func letPeopleWaitTrainAtDownPlatform() -> void:
 	currentNeedGenerate = 16
 	$AllTimer/generatePeopleDownPlatformTimer.start()
+	$AllTimer/generatePeopleAtBTicketingArea.stop()
 
 var totalOfDownPlatform = 0
 var currentNeedGenerate = 4
@@ -511,9 +522,6 @@ func peopleAtDownPlatformDecreased() -> void:
 	for child in allPeopleAtDownPlatform :
 		child.position.y = 0.85
 		child.get_node('Player').state_machine.change_state("Idle")
-	allGeneratePeopleAtDownPlatform = allGeneratePeopleAtDownPlatform.slice(16, allGeneratePeopleAtDownPlatform.size())
-	for child in allGeneratePeopleAtDownPlatform :
-		child.queue_free()
 
 
 func temporaryTicketOfficeComing() -> void:
diff --git a/trainings/trainingLargePassengerFlow/trainingLargePassengerFlow.gd b/trainings/trainingLargePassengerFlow/trainingLargePassengerFlow.gd
index eb234db..0697997 100644
--- a/trainings/trainingLargePassengerFlow/trainingLargePassengerFlow.gd
+++ b/trainings/trainingLargePassengerFlow/trainingLargePassengerFlow.gd
@@ -310,6 +310,7 @@ var handleStep = [
 	{
 		"stepName": "启动一级客流控制\n步骤八：站厅站务员在各楼梯处设置警戒线。(B端)",
 		"stepOperation": ['BGangway','picketline'],
+		"doAfterFinisnStepOperation":reduceInboundPassengerFlowAtA,
 		"next": false, 
 		"play": false,
 		"playPath": "",
@@ -813,6 +814,10 @@ func startGeneratePeopleAtCD(currentStep) -> void:
 	nextStep()
 	$total.startGeneratePeopleAtCD()
 
+func reduceInboundPassengerFlowAtA(currentStep) -> void:
+	nextStep()
+	$total.reduceInboundPassengerFlowAtA()
+
 func stopGeneratePeopleAtA(currentStep) -> void:
 	nextStep()
 	$total.stopGeneratePeopleAtA()