diff --git a/system/system-biz/src/main/java/cn/iocoder/mall/system/biz/dao/user/UserAddressMapper.java b/system/system-biz/src/main/java/cn/iocoder/mall/system/biz/dao/user/UserAddressMapper.java
index bc5bd5c4e..862f5bc22 100644
--- a/system/system-biz/src/main/java/cn/iocoder/mall/system/biz/dao/user/UserAddressMapper.java
+++ b/system/system-biz/src/main/java/cn/iocoder/mall/system/biz/dao/user/UserAddressMapper.java
@@ -13,6 +13,7 @@ import java.util.List;
  * @time 2019-04-06 13:29
  */
 @Repository
+// TODO FROM 芋艿 to 小范：替换成 Mybatis Plus
 public interface UserAddressMapper {
 
     int insert(UserAddressDO userAddressDO);
diff --git a/system/system-biz/src/main/java/cn/iocoder/mall/system/biz/dataobject/user/UserAddressDO.java b/system/system-biz/src/main/java/cn/iocoder/mall/system/biz/dataobject/user/UserAddressDO.java
index 976d89926..d3eaae46c 100644
--- a/system/system-biz/src/main/java/cn/iocoder/mall/system/biz/dataobject/user/UserAddressDO.java
+++ b/system/system-biz/src/main/java/cn/iocoder/mall/system/biz/dataobject/user/UserAddressDO.java
@@ -12,6 +12,7 @@ import lombok.experimental.Accessors;
  */
 @Data
 @Accessors(chain = true)
+// TODO FROM 芋艿 to 小范：还是放在 user 服务，哈哈哈，我表述错了。
 public class UserAddressDO extends DeletableDO {
 
     /**
diff --git a/system/system-biz/src/main/java/cn/iocoder/mall/system/biz/service/sms/SmsClientOfAliYun.java b/system/system-biz/src/main/java/cn/iocoder/mall/system/biz/service/sms/SmsClientOfAliYun.java
index 0a675a230..4215d90e4 100644
--- a/system/system-biz/src/main/java/cn/iocoder/mall/system/biz/service/sms/SmsClientOfAliYun.java
+++ b/system/system-biz/src/main/java/cn/iocoder/mall/system/biz/service/sms/SmsClientOfAliYun.java
@@ -26,7 +26,7 @@ import java.util.Map;
  * @author Sin
  * @time 2019/5/25 12:28 PM
  */
-@Component
+@Component // TODO FROM 芋艿 to 小范：建议类名改成 AliYunSmsClient
 public class SmsClientOfAliYun implements SmsClient {
 
     private static final Logger LOGGER = LoggerFactory.getLogger(SmsClientOfAliYun.class);
diff --git a/system/system-biz/src/main/java/cn/iocoder/mall/system/biz/service/sms/SmsServiceImpl.java b/system/system-biz/src/main/java/cn/iocoder/mall/system/biz/service/sms/SmsServiceImpl.java
index 82fe55841..f6b74a6d5 100644
--- a/system/system-biz/src/main/java/cn/iocoder/mall/system/biz/service/sms/SmsServiceImpl.java
+++ b/system/system-biz/src/main/java/cn/iocoder/mall/system/biz/service/sms/SmsServiceImpl.java
@@ -61,6 +61,7 @@ public class SmsServiceImpl implements SmsService {
 
     @Override
     public PageResult<ListSmsSignBO> listSmsSign(ListSmsSignDTO queryDTO) {
+        // TODO FROM 芋艿 to 小范：mybatis-plus 的 QueryWrapper 不要到 Service 层，可以抽 Dao 方法里哈。其它的类似可以瞅瞅噢
         QueryWrapper<SmsSignDO> queryWrapper = new QueryWrapper<>();
         if (queryDTO.getApplyStatus() != null) {
             queryWrapper.eq("apply_status", queryDTO.getApplyStatus());
@@ -109,6 +110,7 @@ public class SmsServiceImpl implements SmsService {
                 = SmsTemplateConvert.INSTANCE.convert(signPage.getRecords());
 
         if (CollectionUtils.isEmpty(templateList)) {
+            // TODO FROM 芋艿 to 小范，Collections.EMPTY_LIST =》Collections.emptyList();另外，可以考虑直接 Convert 哈
             return new PageResult<>().setList(Collections.EMPTY_LIST).setTotal((int) signPage.getTotal());
         }
 
@@ -147,6 +149,7 @@ public class SmsServiceImpl implements SmsService {
         );
 
         if (smsSignDO != null) {
+            // TODO FROM 芋艿 to 小范：可以使用 ServiceExceptionUtil.exception(SystemErrorCodeEnum.SMS_SIGN_IS_EXISTENT);
             throw new ServiceException(SystemErrorCodeEnum.SMS_SIGN_IS_EXISTENT.getCode(),
                     SystemErrorCodeEnum.SMS_SIGN_IS_EXISTENT.getMessage());
         }