diff --git a/src/main/java/com/whdc/service/ISmsTaskService.java b/src/main/java/com/whdc/service/ISmsTaskService.java
index d3f3b70..f6f9357 100644
--- a/src/main/java/com/whdc/service/ISmsTaskService.java
+++ b/src/main/java/com/whdc/service/ISmsTaskService.java
@@ -2,12 +2,34 @@ package com.whdc.service;
 
 import com.baomidou.mybatisplus.extension.service.IService;
 import com.whdc.model.entity.SmsTask;
+import com.whdc.model.entity.Specialist;
+
+import java.util.List;
 
 /**
- * 短信任务服务接口
+ * 主题日短信服务接口
  *
  * @author lyf
  * @since 2025-09-23
  */
 public interface ISmsTaskService extends IService<SmsTask> {
+    /**
+     * 查询当前活动中的主题日短信任务
+     */
+    List<SmsTask> listActiveTasks();
+
+    /**
+     * 查询需要执行的今日主题日任务
+     */
+    List<SmsTask> listTodayTasks();
+
+    /**
+     * 发送主题日短信
+     */
+    void sendThemeSms(SmsTask smsTask);
+
+    /**
+     * 批量发送主题日短信
+     */
+    void sendBatchThemeSms(List<SmsTask> smsTasks);
 }
\ No newline at end of file
diff --git a/src/main/java/com/whdc/service/impl/SmsTaskServiceImpl.java b/src/main/java/com/whdc/service/impl/SmsTaskServiceImpl.java
index f504e93..92e09fb 100644
--- a/src/main/java/com/whdc/service/impl/SmsTaskServiceImpl.java
+++ b/src/main/java/com/whdc/service/impl/SmsTaskServiceImpl.java
@@ -1,17 +1,273 @@
 package com.whdc.service.impl;
 
+import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import com.whdc.mapper.SmsLogMapper;
 import com.whdc.mapper.SmsTaskMapper;
+import com.whdc.mapper.SpecialistMapper;
+import com.whdc.model.entity.SmsLog;
 import com.whdc.model.entity.SmsTask;
+import com.whdc.model.entity.Specialist;
 import com.whdc.service.ISmsTaskService;
+import com.whdc.utils.SmsHelper;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.scheduling.annotation.Scheduled;
 import org.springframework.stereotype.Service;
 
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
+import java.util.Collections;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.atomic.AtomicBoolean;
+
 /**
- * 短信任务服务实现类
+ * 主题日短信服务实现类
  *
  * @author lyf
  * @since 2025-09-23
  */
 @Service
+@Slf4j
 public class SmsTaskServiceImpl extends ServiceImpl<SmsTaskMapper, SmsTask> implements ISmsTaskService {
+
+    @Autowired
+    private SpecialistMapper specialistMapper;
+
+    @Autowired
+    private SmsLogMapper smsLogMapper;
+
+    @Autowired
+    private SmsHelper smsHelper;
+
+    // 记录每个任务今日是否已发送短信 - 使用并发Map保证线程安全
+    private final Map<Long, AtomicBoolean> taskSmsSentToday = new ConcurrentHashMap<>();
+
+    @Override
+    public List<SmsTask> listActiveTasks() {
+        try {
+            LocalDate today = LocalDate.now();
+
+            // 查询当前活动中的主题日短信任务
+            LambdaQueryWrapper<SmsTask> queryWrapper = new LambdaQueryWrapper<>();
+            queryWrapper
+                .eq(SmsTask::getStatus, 1) // 1:有效
+                .le(SmsTask::getStartDate, today) // 开始日期小于等于今天
+                .ge(SmsTask::getEndDate, today); // 结束日期大于等于今天
+
+            List<SmsTask> tasks = this.list(queryWrapper);
+            return tasks != null ? tasks : Collections.emptyList();
+        } catch (Exception e) {
+            log.error("查询活动中的主题日短信任务失败: {}", e.getMessage(), e);
+            return Collections.emptyList();
+        }
+    }
+
+    @Override
+    public List<SmsTask> listTodayTasks() {
+        try {
+            // 获取当前活动中的任务
+            List<SmsTask> activeTasks = listActiveTasks();
+            if (activeTasks.isEmpty()) {
+                return Collections.emptyList();
+            }
+
+            LocalDate today = LocalDate.now();
+            List<SmsTask> todayTasks = new java.util.ArrayList<>();
+
+            // 筛选今天需要执行的任务
+            for (SmsTask task : activeTasks) {
+                // 检查是否已经发送过
+                AtomicBoolean sentFlag = taskSmsSentToday.computeIfAbsent(task.getId(), k -> new AtomicBoolean(false));
+                if (sentFlag.get()) {
+                    continue; // 今日已发送，跳过
+                }
+
+                // 检查执行时间
+                String executionTime = task.getExecutionTmStr();
+                if (executionTime == null || executionTime.trim().isEmpty()) {
+                    log.warn("主题日任务{}执行时间未配置", task.getSubjectName());
+                    continue;
+                }
+
+                // 检查当前时间是否达到执行时间
+                LocalDateTime now = LocalDateTime.now();
+                try {
+                    String todayWithExecutionTime = today.format(DateTimeFormatter.ofPattern("yyyy-MM-dd")) + " " + executionTime;
+                    LocalDateTime scheduledTime = LocalDateTime.parse(
+                        todayWithExecutionTime,
+                        DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss")
+                    );
+
+                    if (now.isEqual(scheduledTime) || now.isAfter(scheduledTime)) {
+                        todayTasks.add(task);
+                    }
+                } catch (Exception e) {
+                    log.error("主题日任务{}执行时间格式解析失败: {}", task.getSubjectName(), executionTime, e);
+                }
+            }
+
+            return todayTasks;
+        } catch (Exception e) {
+            log.error("查询今日主题日任务失败: {}", e.getMessage(), e);
+            return Collections.emptyList();
+        }
+    }
+
+    @Override
+    public void sendThemeSms(SmsTask smsTask) {
+        if (smsTask == null) {
+            log.warn("主题日短信任务为空");
+            return;
+        }
+
+        // 获取所有有效专家
+        List<Specialist> specialists = getValidSpecialists();
+        if (specialists.isEmpty()) {
+            log.info("没有有效专家，跳过主题日短信发送");
+            return;
+        }
+
+        String template = smsTask.getTemplate();
+        if (template == null || template.trim().isEmpty()) {
+            log.warn("主题日任务{}模板内容为空", smsTask.getSubjectName());
+            return;
+        }
+
+        // 逐个发送个性化短信
+        for (Specialist specialist : specialists) {
+            try {
+                // 替换模板中的占位符
+                String content = template.replace("{姓名}", specialist.getName())
+                                          .replace("{称呼}", specialist.getTitle() != null ? specialist.getTitle() : "")
+                                          .replace("{主题}", smsTask.getSubjectName());
+
+                // 创建短信日志记录
+                SmsLog smsLog = new SmsLog();
+                smsLog.setName(specialist.getName())
+                      .setPhone(specialist.getPhone())
+                      .setContent(content)
+                      .setRemark("主题日短信-" + smsTask.getSubjectName())
+                      .setSendTm(new java.util.Date());
+
+                // 使用SmsHelper发送个性化短信
+                List<String> phoneList = Collections.singletonList(specialist.getPhone());
+                String sendResult = smsHelper.send(phoneList, content);
+                log.info("向专家{}发送主题日短信[{}]结果: {}", specialist.getName(), smsTask.getSubjectName(), sendResult);
+
+                // 根据发送结果设置备注
+                if ("发送成功".equals(sendResult)) {
+                    smsLog.setRemark("主题日短信-" + smsTask.getSubjectName() + "-发送成功");
+                } else {
+                    smsLog.setRemark("主题日短信-" + smsTask.getSubjectName() + "-发送失败: " + sendResult);
+                }
+
+                // 保存短信日志记录
+                smsLogMapper.insert(smsLog);
+
+            } catch (Exception e) {
+                log.error("向专家{}发送主题日短信[{}]时发生异常: {}", specialist.getName(), smsTask.getSubjectName(), e.getMessage(), e);
+
+                // 即使发送失败，也保存短信记录
+                try {
+                    SmsLog failedSmsLog = new SmsLog();
+                    failedSmsLog.setName(specialist.getName())
+                                .setPhone(specialist.getPhone())
+                                .setContent(template.replace("{姓名}", specialist.getName())
+                                        .replace("{称呼}", specialist.getTitle() != null ? specialist.getTitle() : "")
+                                        .replace("{主题}", smsTask.getSubjectName()))
+                                .setRemark("主题日短信-" + smsTask.getSubjectName() + "-发送异常: " + e.getMessage())
+                                .setSendTm(new java.util.Date());
+                    smsLogMapper.insert(failedSmsLog);
+                } catch (Exception logException) {
+                    log.error("保存发送失败的短信日志时发生异常: {}", logException.getMessage(), logException);
+                }
+            }
+        }
+
+        // 标记任务今日已发送
+        AtomicBoolean sentFlag = taskSmsSentToday.computeIfAbsent(smsTask.getId(), k -> new AtomicBoolean(false));
+        sentFlag.set(true);
+        log.info("主题日短信任务[{}]发送完成", smsTask.getSubjectName());
+    }
+
+    @Override
+    public void sendBatchThemeSms(List<SmsTask> smsTasks) {
+        if (smsTasks == null || smsTasks.isEmpty()) {
+            log.info("没有需要发送的主题日短信任务");
+            return;
+        }
+
+        log.info("开始批量发送{}个主题日短信任务", smsTasks.size());
+        for (SmsTask task : smsTasks) {
+            try {
+                sendThemeSms(task);
+            } catch (Exception e) {
+                log.error("发送主题日短信任务[{}]失败: {}", task.getSubjectName(), e.getMessage(), e);
+            }
+        }
+        log.info("批量主题日短信任务发送完成");
+    }
+
+    /**
+     * 获取所有有效专家
+     */
+    private List<Specialist> getValidSpecialists() {
+        try {
+            LambdaQueryWrapper<Specialist> queryWrapper = new LambdaQueryWrapper<>();
+            queryWrapper.eq(Specialist::getStatus, 1); // 1:有效
+            queryWrapper.isNotNull(Specialist::getPhone); // 手机号不为空
+
+            List<Specialist> specialists = specialistMapper.selectList(queryWrapper);
+            return specialists != null ? specialists : Collections.emptyList();
+        } catch (Exception e) {
+            log.error("查询有效专家失败: {}", e.getMessage(), e);
+            return Collections.emptyList();
+        }
+    }
+
+    /**
+     * 定时检查并发送主题日短信
+     * 每分钟执行一次
+     */
+    @Scheduled(cron = "0 * * * * ?")
+    public void checkAndSendThemeSms() {
+        try {
+            // 查询今日需要执行的主题日任务
+            List<SmsTask> todayTasks = listTodayTasks();
+
+            if (todayTasks.isEmpty()) {
+                log.debug("今日没有需要执行的主题日短信任务");
+                return;
+            }
+
+            log.info("检测到{}个主题日短信任务需要执行", todayTasks.size());
+
+            // 批量发送主题日短信
+            sendBatchThemeSms(todayTasks);
+
+        } catch (Exception e) {
+            log.error("定时检查主题日短信任务执行异常: {}", e.getMessage(), e);
+        }
+    }
+
+    /**
+     * 重置每日发送状态
+     * 每天凌晨00:00:01执行
+     */
+    @Scheduled(cron = "1 0 0 * * ?")
+    public void resetDailySendStatus() {
+        try {
+            // 重置所有任务的发送状态
+            for (AtomicBoolean sentFlag : taskSmsSentToday.values()) {
+                sentFlag.set(false);
+            }
+            log.info("主题日短信每日发送状态已重置");
+        } catch (Exception e) {
+            log.error("重置主题日短信每日发送状态异常: {}", e.getMessage(), e);
+        }
+    }
 }
\ No newline at end of file