diff --git a/src/main/java/com/keyware/composeanalysis/task/CodeBlockAnalysisTask.java b/src/main/java/com/keyware/composeanalysis/task/CodeBlockAnalysisTask.java
index ec4dc35..333826b 100644
--- a/src/main/java/com/keyware/composeanalysis/task/CodeBlockAnalysisTask.java
+++ b/src/main/java/com/keyware/composeanalysis/task/CodeBlockAnalysisTask.java
@@ -190,8 +190,10 @@ public class CodeBlockAnalysisTask extends IAnalysisTask {
             matchCodeBlockLineCount += traitsFeatureMd5AndFeatureLineNumMap.get(matchFeatureMd5);
         }
 
+        //特征行总数
+        int totalFeatureLineCount = traitsFeatureMd5AndFeatureLineNumMap.values().stream().mapToInt(Integer::intValue).sum();
         //计算文件的总体特征相似度
-        BigDecimal featureSimilarity = new BigDecimal(matchCodeBlockLineCount).divide(new BigDecimal(analysisFile.getCodeRowNum()), 4, RoundingMode.HALF_UP).multiply(new BigDecimal(100)).setScale(2);
+        BigDecimal featureSimilarity = new BigDecimal(matchCodeBlockLineCount).divide(new BigDecimal(totalFeatureLineCount), 4, RoundingMode.HALF_UP).multiply(new BigDecimal(100)).setScale(2);
 
         //计算文件的总体开源率
         BigDecimal openRate = new BigDecimal(matchedLineRowsNum.size()).divide(new BigDecimal(analysisFile.getCodeRowNum()), 4, RoundingMode.HALF_UP).multiply(new BigDecimal(100)).setScale(2);