diff --git a/dlp-drugtesting-biz/src/main/java/digital/laboratory/platform/inspection/vo/TestRecordSampleDataExpandVO.java b/dlp-drugtesting-biz/src/main/java/digital/laboratory/platform/inspection/vo/TestRecordSampleDataExpandVO.java
index d689a1c..d3fdf93 100644
--- a/dlp-drugtesting-biz/src/main/java/digital/laboratory/platform/inspection/vo/TestRecordSampleDataExpandVO.java
+++ b/dlp-drugtesting-biz/src/main/java/digital/laboratory/platform/inspection/vo/TestRecordSampleDataExpandVO.java
@@ -1,6 +1,7 @@
 package digital.laboratory.platform.inspection.vo;
 
 import com.baomidou.mybatisplus.annotation.TableName;
+import digital.laboratory.platform.inspection.constant.TestRecordSampleDataConstant;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import lombok.Data;
@@ -52,21 +53,21 @@ public class TestRecordSampleDataExpandVO {
 
     public String getIonAbundanceRatio() {
         if (getBasePeak()) {
-            return "/";
+            return TestRecordSampleDataConstant.INVALID_VALUE_STR;
         }
         return ionAbundanceRatio != null ? ionAbundanceRatio.setScale(2, RoundingMode.HALF_UP).toString() : null;
     }
 
     public String getIonAbundanceRatioError() {
         if (getBasePeak()) {
-            return "/";
+            return TestRecordSampleDataConstant.INVALID_VALUE_STR;
         }
         return ionAbundanceRatioError != null ? ionAbundanceRatioError.setScale(2, RoundingMode.HALF_UP).toString() : null;
     }
 
     public String getIonAbundanceRatioWithinError() {
         if (getBasePeak()) {
-            return "/";
+            return TestRecordSampleDataConstant.INVALID_VALUE_STR;
         }
         return ionAbundanceRatioWithinError;
     }