diff --git a/backend/services/case-management/src/main/java/io/metersphere/functional/excel/validate/CustomFieldMultipleMemberValidator.java b/backend/services/case-management/src/main/java/io/metersphere/functional/excel/validate/CustomFieldMultipleMemberValidator.java
index f5733b6de4..2fbf133722 100644
--- a/backend/services/case-management/src/main/java/io/metersphere/functional/excel/validate/CustomFieldMultipleMemberValidator.java
+++ b/backend/services/case-management/src/main/java/io/metersphere/functional/excel/validate/CustomFieldMultipleMemberValidator.java
@@ -15,6 +15,10 @@ import java.util.List;
  */
 public class CustomFieldMultipleMemberValidator extends CustomFieldMemberValidator {
 
+    public CustomFieldMultipleMemberValidator(String projectId) {
+        super(projectId);
+    }
+
     @Override
     public void validate(TemplateCustomFieldDTO customField, String value) throws CustomFieldValidateException {
         validateArrayRequired(customField, value);
@@ -54,15 +58,15 @@ public class CustomFieldMultipleMemberValidator extends CustomFieldMemberValidat
         if (StringUtils.isBlank(keyOrValuesStr)) {
             return JSON.toJSONString(new ArrayList<>());
         }
-        List<String> keyOrValues = parse2Array(keyOrValuesStr);
-
-        for (int i = 0; i < keyOrValues.size(); i++) {
-            String item = keyOrValues.get(i).toLowerCase();
-            if (userIdEmailMap.containsKey(item)) {
-                keyOrValues.set(i, userIdEmailMap.get(item));
+        List list = JSON.parseArray(keyOrValuesStr);
+        List<String> result = new ArrayList<>();
+        list.forEach(item -> {
+            if (super.userIdEmailMap.containsKey(item)) {
+                result.add(userIdEmailMap.get(item));
             }
-        }
-        return JSON.toJSONString(keyOrValues);
+        });
+
+        return String.join(",", JSON.parseArray(JSON.toJSONString(result)));
     }
 
 }
diff --git a/backend/services/case-management/src/main/java/io/metersphere/functional/excel/validate/CustomFieldMultipleSelectValidator.java b/backend/services/case-management/src/main/java/io/metersphere/functional/excel/validate/CustomFieldMultipleSelectValidator.java
index a93edadd5a..9e6c3ba781 100644
--- a/backend/services/case-management/src/main/java/io/metersphere/functional/excel/validate/CustomFieldMultipleSelectValidator.java
+++ b/backend/services/case-management/src/main/java/io/metersphere/functional/excel/validate/CustomFieldMultipleSelectValidator.java
@@ -56,12 +56,14 @@ public class CustomFieldMultipleSelectValidator extends CustomFieldSelectValidat
         if (StringUtils.isBlank(keyOrValuesStr) || StringUtils.equals(keyOrValuesStr, "[]")) {
             return StringUtils.EMPTY;
         }
-        String keyOrValues = String.join(",", JSON.parseArray(keyOrValuesStr));
+        List list = JSON.parseArray(keyOrValuesStr);
         List<String> result = new ArrayList<>();
         Map<String, String> optionValueMap = customField.getOptions().stream().collect(Collectors.toMap(CustomFieldOption::getValue, CustomFieldOption::getText));
-        if (optionValueMap.containsKey(keyOrValues)) {
-            result.add(optionValueMap.get(keyOrValues));
-        }
+        list.forEach(item -> {
+            if (optionValueMap.containsKey(item)) {
+                result.add(optionValueMap.get(item));
+            }
+        });
         return String.join(",", JSON.parseArray(JSON.toJSONString(result)));
     }
 
diff --git a/backend/services/case-management/src/main/java/io/metersphere/functional/excel/validate/CustomFieldValidatorFactory.java b/backend/services/case-management/src/main/java/io/metersphere/functional/excel/validate/CustomFieldValidatorFactory.java
index b43f12ac67..43afe654e5 100644
--- a/backend/services/case-management/src/main/java/io/metersphere/functional/excel/validate/CustomFieldValidatorFactory.java
+++ b/backend/services/case-management/src/main/java/io/metersphere/functional/excel/validate/CustomFieldValidatorFactory.java
@@ -29,7 +29,7 @@ public class CustomFieldValidatorFactory {
         validatorMap.put(CustomFieldType.DATETIME.name(), new CustomFieldDateTimeValidator());
 
         validatorMap.put(CustomFieldType.MEMBER.name(), new CustomFieldMemberValidator(projectId));
-        validatorMap.put(CustomFieldType.MULTIPLE_MEMBER.name(), new CustomFieldMultipleMemberValidator());
+        validatorMap.put(CustomFieldType.MULTIPLE_MEMBER.name(), new CustomFieldMultipleMemberValidator(projectId));
 
         validatorMap.put(CustomFieldType.INT.name(), new CustomFieldIntegerValidator());
         validatorMap.put(CustomFieldType.FLOAT.name(), new CustomFieldFloatValidator());