diff --git a/backend/src/main/java/io/metersphere/track/service/TestCaseService.java b/backend/src/main/java/io/metersphere/track/service/TestCaseService.java
index e17ac4c887..adbe0ce916 100644
--- a/backend/src/main/java/io/metersphere/track/service/TestCaseService.java
+++ b/backend/src/main/java/io/metersphere/track/service/TestCaseService.java
@@ -1551,8 +1551,9 @@ public class TestCaseService {
         List<TestCaseExcelData> list = new ArrayList<>();
         Map<String, Map<String, String>> customSelectValueMap = new HashMap<>();
         Map<String, String> customNameMap = new HashMap<>();
+        String projectId = testCaseList.get(0).getProjectId();
         TestCaseTemplateService testCaseTemplateService = CommonBeanFactory.getBean(TestCaseTemplateService.class);
-        TestCaseTemplateDao testCaseTemplate = testCaseTemplateService.getTemplate(testCaseList.get(0).getProjectId());
+        TestCaseTemplateDao testCaseTemplate = testCaseTemplateService.getTemplate(projectId);
 
         List<CustomFieldDao> customFieldList;
         if (testCaseTemplate == null) {
@@ -1562,7 +1563,11 @@ public class TestCaseService {
         }
 
         Set<String> textFields = new HashSet<>();
-        buildExportCustomFieldMap(customSelectValueMap, customNameMap, customFieldList, textFields);
+        Map<String, String> userMap = userService.getProjectMemberOption(projectId)
+                .stream()
+                .collect(Collectors.toMap(User::getId, User::getName));
+
+        buildExportCustomFieldMap(userMap, customSelectValueMap, customNameMap, customFieldList, textFields);
 
         for (int rowIndex = 0; rowIndex < testCaseList.size(); rowIndex++) {
             TestCaseDTO t = testCaseList.get(rowIndex);
@@ -1572,6 +1577,7 @@ public class TestCaseService {
 
             setExportSystemField(t, customNameMap, customSelectValueMap);
             BeanUtils.copyBean(data, t);
+            data.setMaintainer(userMap.get(data.getMaintainer()));
             buildExportCustomNum(isUseCustomId, t, data);
             buildExportStep(t, stepDescList, stepResultList, data);
             buildExportCustomField(customSelectValueMap, customNameMap, t, data, textFields);
@@ -1715,8 +1721,8 @@ public class TestCaseService {
         }
     }
 
-    private void buildExportCustomFieldMap(Map<String, Map<String, String>> customSelectValueMap, Map<String, String> customNameMap,
-                                           List<CustomFieldDao> customFieldList, Set<String> textFields) {
+    private void buildExportCustomFieldMap(Map<String, String> userMap, Map<String, Map<String, String>> customSelectValueMap,
+                                           Map<String, String> customNameMap, List<CustomFieldDao> customFieldList, Set<String> textFields) {
         for (CustomFieldDao dto : customFieldList) {
             Map<String, String> map = new HashMap<>();
             if (CustomFieldType.getHasOptionValueSet().contains(dto.getType())) {
@@ -1744,7 +1750,11 @@ public class TestCaseService {
             if (StringUtils.equalsAny(dto.getType(), CustomFieldType.TEXTAREA.getValue(), CustomFieldType.RICH_TEXT.getValue())) {
                 textFields.add(dto.getId());
             }
-            customSelectValueMap.put(dto.getId(), map);
+            if (StringUtils.equalsAny(dto.getType(), CustomFieldType.MULTIPLE_MEMBER.getValue(), CustomFieldType.MEMBER.getValue())) {
+                customSelectValueMap.put(dto.getId(), userMap);
+            } else {
+                customSelectValueMap.put(dto.getId(), map);
+            }
             customNameMap.put(dto.getId(), dto.getName());
         }
     }
diff --git a/backend/src/main/java/io/metersphere/track/validate/CustomFieldMemberValidator.java b/backend/src/main/java/io/metersphere/track/validate/CustomFieldMemberValidator.java
index 3d1cef5bb5..28a61d79e9 100644
--- a/backend/src/main/java/io/metersphere/track/validate/CustomFieldMemberValidator.java
+++ b/backend/src/main/java/io/metersphere/track/validate/CustomFieldMemberValidator.java
@@ -22,8 +22,8 @@ public class CustomFieldMemberValidator extends AbstractCustomFieldValidator {
         this.isKVOption = true;
         UserService userService = CommonBeanFactory.getBean(UserService.class);
         List<User> memberOption = userService.getProjectMemberOption(SessionUtils.getCurrentProjectId());
-        userIdMap = memberOption.stream().collect(Collectors.toMap(User::getId, User::getName));
-        userNameMap = memberOption.stream().collect(Collectors.toMap(User::getName, User::getId));
+        userIdMap = memberOption.stream().collect(Collectors.toMap(user -> user.getId().toLowerCase(), user -> user.getName().toLowerCase()));
+        userNameMap = memberOption.stream().collect(Collectors.toMap(user -> user.getName().toLowerCase(), user -> user.getId().toLowerCase()));
     }
 
     @Override
@@ -41,8 +41,8 @@ public class CustomFieldMemberValidator extends AbstractCustomFieldValidator {
 
     @Override
     public Object parse2Key(String keyOrValue, CustomFieldDao customField) {
-        if (userNameMap.containsKey(keyOrValue)) {
-            return userNameMap.get(keyOrValue);
+        if (userNameMap.containsKey(keyOrValue.toLowerCase())) {
+            return userNameMap.get(keyOrValue.toLowerCase());
         }
         return keyOrValue;
     }
diff --git a/backend/src/main/java/io/metersphere/track/validate/CustomFieldMultipleMemberValidator.java b/backend/src/main/java/io/metersphere/track/validate/CustomFieldMultipleMemberValidator.java
index 0cefe22cac..2e48a00568 100644
--- a/backend/src/main/java/io/metersphere/track/validate/CustomFieldMultipleMemberValidator.java
+++ b/backend/src/main/java/io/metersphere/track/validate/CustomFieldMultipleMemberValidator.java
@@ -1,6 +1,5 @@
 package io.metersphere.track.validate;
 
-import com.alibaba.fastjson.JSONArray;
 import io.metersphere.commons.exception.CustomFieldValidateException;
 import io.metersphere.dto.CustomFieldDao;
 import io.metersphere.i18n.Translator;
@@ -34,7 +33,7 @@ public class CustomFieldMultipleMemberValidator extends CustomFieldMemberValidat
         List<String> keyOrValues = parse2Array(keyOrValuesStr);
 
         for (int i = 0; i < keyOrValues.size(); i++) {
-            String item = keyOrValues.get(i);
+            String item = keyOrValues.get(i).toLowerCase();
             if (userNameMap.containsKey(item)) {
                 keyOrValues.set(i, userNameMap.get(item));
             }