diff --git a/servers/boe-server-all/src/main/java/com/xboe/module/boecase/service/impl/CaseAiChatServiceImpl.java b/servers/boe-server-all/src/main/java/com/xboe/module/boecase/service/impl/CaseAiChatServiceImpl.java
index ef24d226..a8196670 100644
--- a/servers/boe-server-all/src/main/java/com/xboe/module/boecase/service/impl/CaseAiChatServiceImpl.java
+++ b/servers/boe-server-all/src/main/java/com/xboe/module/boecase/service/impl/CaseAiChatServiceImpl.java
@@ -108,6 +108,9 @@ public class CaseAiChatServiceImpl implements ICaseAiChatService {
     public SseEmitter chat(CaseAiChatDto caseAiChatDto, CurrentUser currentUser) {
         // 1. 获取conversationId
         String conversationId = getOrCreateConversationId(caseAiChatDto, currentUser);
+
+        // 2. 查询历史
+        List<CaseAiMessageVo> historyMessages = elasticSearchIndexService.queryData(conversationId);
         
         // 3. 构建请求参数
         String userId = currentUser.getCode();
@@ -120,6 +123,20 @@ public class CaseAiChatServiceImpl implements ICaseAiChatService {
         chatParam.put("query", caseAiChatDto.getQuery());
         chatParam.put("conversationId", conversationId);
         chatParam.put("enableThinking", Objects.equals(caseAiChatDto.getEnableThinking(), 1));
+        if (historyMessages != null && !historyMessages.isEmpty()) {
+            // 最多10条历史，从后往前
+            JSONArray historyList = new JSONArray();
+            int size = historyMessages.size();
+            int startIndex = Math.max(0, size - 10);
+            for (int i = startIndex; i < size; i++) {
+                JSONObject conversationDetail = new JSONObject();
+                CaseAiMessageVo message = historyMessages.get(i);
+                conversationDetail.put("query", message.getQuery());
+                conversationDetail.put("content", message.getAnswer());
+                historyList.add(conversationDetail);
+            }
+            chatParam.put("historyList", historyList);
+        }
         String chatParamStr = chatParam.toJSONString();
         log.info("案例问答接口请求参数: [{}]", chatParamStr);
         
diff --git a/servers/boe-server-all/src/main/java/com/xboe/module/boecase/task/CaseAiChatDataTask.java b/servers/boe-server-all/src/main/java/com/xboe/module/boecase/task/CaseAiChatDataTask.java
index 3ffda0e8..99db06bd 100644
--- a/servers/boe-server-all/src/main/java/com/xboe/module/boecase/task/CaseAiChatDataTask.java
+++ b/servers/boe-server-all/src/main/java/com/xboe/module/boecase/task/CaseAiChatDataTask.java
@@ -8,6 +8,7 @@ import org.springframework.stereotype.Component;
 
 import java.time.LocalDateTime;
 import java.time.YearMonth;
+import java.time.format.DateTimeFormatter;
 
 @Component
 @Slf4j
@@ -22,17 +23,55 @@ public class CaseAiChatDataTask {
      * cron: 0/10 * * * * ?
      */
     @XxlJob("chatDataExcelDownloadJob")
-    public void chatDataExcelDownload() {
-        LocalDateTime now = LocalDateTime.now();
-        // 取上个月的1号00:00:00到上个月最后一天的23:59:59
-        YearMonth lastMonth = YearMonth.from(now).minusMonths(1);
-        LocalDateTime startTime = now.minusMonths(1)
-                .withDayOfMonth(1)
-                .withHour(0)
-                .withMinute(0)
-                .withSecond(0);
-        LocalDateTime endTime = lastMonth.atEndOfMonth().atTime(23, 59, 59);
+    public void chatDataExcelDownload(String param) {
+        LocalDateTime startTime;
+        LocalDateTime endTime;
+        
+        if (param != null && !param.isEmpty()) {
+            // 解析参数，格式应为 "startTime,endTime"，例如 "2023-01-01T00:00:00,2023-01-31T23:59:59"
+            String[] times = param.split(",");
+            if (times.length == 2) {
+                DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss");
+                try {
+                    startTime = LocalDateTime.parse(times[0], formatter);
+                    endTime = LocalDateTime.parse(times[1], formatter);
+                    log.info("使用参数指定的时间范围: {} 到 {}", startTime, endTime);
+                } catch (Exception e) {
+                    log.error("解析时间参数失败，使用默认时间范围", e);
+                    // 使用默认逻辑
+                    LocalDateTime now = LocalDateTime.now();
+                    YearMonth lastMonth = YearMonth.from(now).minusMonths(1);
+                    startTime = now.minusMonths(1)
+                            .withDayOfMonth(1)
+                            .withHour(0)
+                            .withMinute(0)
+                            .withSecond(0);
+                    endTime = lastMonth.atEndOfMonth().atTime(23, 59, 59);
+                }
+            } else {
+                // 使用默认逻辑
+                LocalDateTime now = LocalDateTime.now();
+                YearMonth lastMonth = YearMonth.from(now).minusMonths(1);
+                startTime = now.minusMonths(1)
+                        .withDayOfMonth(1)
+                        .withHour(0)
+                        .withMinute(0)
+                        .withSecond(0);
+                endTime = lastMonth.atEndOfMonth().atTime(23, 59, 59);
+            }
+        } else {
+            // 使用默认逻辑
+            LocalDateTime now = LocalDateTime.now();
+            YearMonth lastMonth = YearMonth.from(now).minusMonths(1);
+            startTime = now.minusMonths(1)
+                    .withDayOfMonth(1)
+                    .withHour(0)
+                    .withMinute(0)
+                    .withSecond(0);
+            endTime = lastMonth.atEndOfMonth().atTime(23, 59, 59);
+        }
+        
         // 执行
         caseAiChatService.downloadConversationExcel(startTime, endTime);
     }
-}
+}
\ No newline at end of file