diff --git a/AlgorithmModule/src/ImgCheckAnalysisy.cpp b/AlgorithmModule/src/ImgCheckAnalysisy.cpp
index 3ff4787..2bd641f 100644
--- a/AlgorithmModule/src/ImgCheckAnalysisy.cpp
+++ b/AlgorithmModule/src/ImgCheckAnalysisy.cpp
@@ -1342,7 +1342,7 @@ int ImgCheckAnalysisy::AnalysisResult_Qx()
 		//  精确计算长度
 		float re_len = Cal_QXLen(m_TemCheck.temImgList[TEM_IMG_IDX_AImask](roi), config_qx_type, fs_x, fs_y);
 
-		if (re_len >= 0)
+		if (re_len > flen)
 		{
 			flen = re_len;
 			blobs.blobTab[i].len = flen;