diff --git a/src/main/java/io/v/nutz/zhgh/qsv/service/impl/QsvSurveyServiceImpl.java b/src/main/java/io/v/nutz/zhgh/qsv/service/impl/QsvSurveyServiceImpl.java
index 5ec9e60..c4ca13b 100644
--- a/src/main/java/io/v/nutz/zhgh/qsv/service/impl/QsvSurveyServiceImpl.java
+++ b/src/main/java/io/v/nutz/zhgh/qsv/service/impl/QsvSurveyServiceImpl.java
@@ -239,29 +239,9 @@ public class QsvSurveyServiceImpl extends BaseServiceImpl<QsvUserAnswerRecord> i
             // 构建Excel导出实体
             List<ExcelExportEntity> excelExportEntities = buildExcelExportEntities(subjects);
             // 构建答题记录列表
-            List<NutMap> list = answerRecords.stream().map(record -> {
-                NutMap map = NutMap.NEW()
-                        .addv("id", record.getString("id"))
-                        .addv("loginName", record.getString("loginName"))
-                        .addv("userName", record.getString("userName"))
-                        .addv("unitName", record.getString("unitName"))
-                        .addv("unionName", record.getString("unionName"));
-                JSONObject extJson = record.getAs("extJson", JSONObject.class);
-                extJson.forEach((k, v) -> {
-                    JSONObject jsonVal = (JSONObject) v;
-
-                    String type = subjectMap.get(k).getType();
-                    if (type.equals("text")) {
-                        map.addv(k, jsonVal.getStr("text"));
-                    } else if (type.equals("radio") || type.equals("checkbox")) {
-                        JSONArray optionIds = jsonVal.getJSONArray("optionIds");
-                        String selectOptionTexts = options.stream().filter(option -> optionIds.contains(option.getId()))
-                                .map(QsvOption::getText).collect(Collectors.joining(";"));
-                        map.addv(k, selectOptionTexts);
-                    }
-                });
-                return map;
-            }).toList();
+            List<NutMap> list = answerRecords.stream()
+                    .map(record -> buildAnswerRecordMap(record, subjectMap, options))
+                    .toList();
             pagination.setList(list);
 
 
@@ -312,28 +292,60 @@ public class QsvSurveyServiceImpl extends BaseServiceImpl<QsvUserAnswerRecord> i
     }
 
     private List<NutMap> buildAnswerRecords(List<QsvUserAnswerRecord> answerRecords, Map<String, QsvSubject> subjectMap, List<QsvOption> options) {
-        return answerRecords.stream().map(record -> {
-            NutMap map = NutMap.NEW()
-                    .addv("id", record.getId())
-                    .addv("loginName", record.getLoginName())
-                    .addv("userName", record.getUserName())
-                    .addv("unitName", record.getUnitName())
-                    .addv("unionName", record.getUnionName());
-            JSONObject extJson = record.getExtJson();
-            extJson.forEach((k, v) -> {
-                JSONObject jsonVal = (JSONObject) v;
+        return answerRecords.stream()
+                .map(record -> buildAnswerRecordMap(record, subjectMap, options))
+                .collect(Collectors.toList());
+    }
 
-                String type = subjectMap.get(k).getType();
-                if (type.equals("text")) {
-                    map.addv(k, jsonVal.getStr("text"));
-                } else if (type.equals("radio") || type.equals("checkbox")) {
-                    JSONArray optionIds = jsonVal.getJSONArray("optionIds");
-                    String selectOptionTexts = options.stream().filter(option -> optionIds.contains(option.getId()))
-                            .map(QsvOption::getText).collect(Collectors.joining(";"));
-                    map.addv(k, selectOptionTexts);
+    private NutMap buildAnswerRecordMap(NutMap record, Map<String, QsvSubject> subjectMap, List<QsvOption> options) {
+        NutMap map = NutMap.NEW()
+                .addv("id", record.getString("id"))
+                .addv("loginName", record.getString("loginName"))
+                .addv("userName", record.getString("userName"))
+                .addv("unitName", record.getString("unitName"))
+                .addv("unionName", record.getString("unionName"));
+        fillSubjectAnswers(map, record.getAs("extJson", JSONObject.class), subjectMap, options);
+        return map;
+    }
+
+    private NutMap buildAnswerRecordMap(QsvUserAnswerRecord record, Map<String, QsvSubject> subjectMap, List<QsvOption> options) {
+        NutMap map = NutMap.NEW()
+                .addv("id", record.getId())
+                .addv("loginName", record.getLoginName())
+                .addv("userName", record.getUserName())
+                .addv("unitName", record.getUnitName())
+                .addv("unionName", record.getUnionName());
+        fillSubjectAnswers(map, record.getExtJson(), subjectMap, options);
+        return map;
+    }
+
+    private void fillSubjectAnswers(NutMap map, JSONObject extJson, Map<String, QsvSubject> subjectMap, List<QsvOption> options) {
+        if (extJson == null) {
+            return;
+        }
+        extJson.forEach((k, v) -> {
+            QsvSubject subject = subjectMap.get(k);
+            JSONObject jsonVal = extJson.get(k, JSONObject.class);
+            // 兼容历史答卷中保留了已删除题目或异常答案结构的情况，避免导出时中断。
+            if (subject == null || jsonVal == null) {
+                return;
+            }
+
+            String type = subject.getType();
+            if ("text".equals(type)) {
+                map.addv(k, jsonVal.getStr("text"));
+            } else if ("radio".equals(type) || "checkbox".equals(type)) {
+                JSONArray optionIds = jsonVal.getJSONArray("optionIds");
+                if (optionIds == null) {
+                    map.addv(k, "");
+                    return;
                 }
-            });
-            return map;
-        }).collect(Collectors.toList());
+                String selectOptionTexts = options.stream()
+                        .filter(option -> optionIds.contains(option.getId()))
+                        .map(QsvOption::getText)
+                        .collect(Collectors.joining(";"));
+                map.addv(k, selectOptionTexts);
+            }
+        });
     }
 }