diff --git a/CHANGELOG.md b/CHANGELOG.md
index c8b59cf..6ce20be 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@ ENHANCEMENTS:
 
 BUG FIXES:
 - Fix a bug that undocumented swagger properties caused inaccurate coverage report
+- Remove duplicated items in the error report.
 
 ## v0.14.0
 FEATURES:
diff --git a/report/api_test_report.go b/report/api_test_report.go
index bc178ff..0491fc4 100644
--- a/report/api_test_report.go
+++ b/report/api_test_report.go
@@ -77,6 +77,19 @@ func OavValidateTraffic(traceDir string, swaggerPath string, outputDir string) (
 		return nil, fmt.Errorf("oav report is empty")
 	}
 
+	// remove duplicated error items
+	errorMap := make(map[string]ErrorItem)
+	for _, errItem := range payload.Errors {
+		errorMap[fmt.Sprintf("%s-%s-%s-%s", errItem.ErrorCode, errItem.ErrorMessage, errItem.OperationId, errItem.SchemaPathWithPosition)] = errItem
+	}
+
+	errors := make([]ErrorItem, 0)
+	for _, v := range errorMap {
+		errors = append(errors, v)
+	}
+
+	payload.Errors = errors
+
 	return payload, nil
 }