diff --git a/hgdriver/hgdev/hg_scanner.cpp b/hgdriver/hgdev/hg_scanner.cpp
index 4759fb8..aa0d09e 100644
--- a/hgdriver/hgdev/hg_scanner.cpp
+++ b/hgdriver/hgdev/hg_scanner.cpp
@@ -4332,18 +4332,7 @@ void hg_scanner::image_process(std::shared_ptr<tiny_buffer>& buffer, uint32_t id
 
 		if ((img_conf_.refuseInflow) && (pid_ != 0x239 && pid_ != 0x439))
 		{
-			int lv = 5;
-
-			if (image_prc_param_.bits.is_permeate_lv_ == 0)
-				lv = 5;
-			else if (image_prc_param_.bits.is_permeate_lv_ == 1)
-				lv = 15;
-			else if (image_prc_param_.bits.is_permeate_lv_ == 2)
-				lv = 25;
-			else if (image_prc_param_.bits.is_permeate_lv_ == 3)
-				lv = 35;
-			else if (image_prc_param_.bits.is_permeate_lv_ == 4)
-				lv = 45;
+			int lv = 5 + image_prc_param_.bits.is_permeate_lv_ * 10;  //image_prc_param_.bits.is_permeate_lv_ = 0 1 2 3 4
 
 			hg_imgproc::antiInflow(ImagePrc_pHandle_, lv);
 			(this->*dump_img_)(ImagePrc_pHandle_, "antiInflow");