diff --git a/beacon-api/src/main/java/com/mashibing/api/feignClient/CacheClient.java b/beacon-api/src/main/java/com/mashibing/api/feignClient/CacheClient.java
index 3911fc7..18d43a5 100644
--- a/beacon-api/src/main/java/com/mashibing/api/feignClient/CacheClient.java
+++ b/beacon-api/src/main/java/com/mashibing/api/feignClient/CacheClient.java
@@ -4,6 +4,7 @@ import org.springframework.cloud.openfeign.FeignClient;
 import org.springframework.web.bind.annotation.*;
 
 import java.util.Map;
+import java.util.Set;
 
 /**
  * @author heqijun
@@ -36,4 +37,6 @@ public interface CacheClient {
 	@PostMapping("/sadd/{key}")
 	void sadd(@PathVariable(value = "key") String key, @RequestBody Map<String, Object>... maps);
 
+	@PostMapping("/smember/{key}")
+	Set<Map> smember(@PathVariable(value = "key") String key);
 }
diff --git a/beacon-api/src/main/java/com/mashibing/api/service/sendCheck/impl/ApikeySendCheckServiceImpl.java b/beacon-api/src/main/java/com/mashibing/api/service/sendCheck/impl/ApikeySendCheckServiceImpl.java
index d313c93..c806e9b 100644
--- a/beacon-api/src/main/java/com/mashibing/api/service/sendCheck/impl/ApikeySendCheckServiceImpl.java
+++ b/beacon-api/src/main/java/com/mashibing/api/service/sendCheck/impl/ApikeySendCheckServiceImpl.java
@@ -31,11 +31,11 @@ public class ApikeySendCheckServiceImpl implements SendCheckService {
 
 	@Override
 	public void check(StandardSubmit submit) {
-		log.info("【api模块】发送短信前，apikey校验。。。");
+		log.info("【接口模块】发送短信前，apikey校验。。。");
 		Map<String, String> clientBusinessMap = (Map<String, String>) cacheClient.hget(CacheConstant.CLIENT_BUSINESS + submit.getApikey());
-		log.info("缓存中查询到客户信息：{}", clientBusinessMap);
+		log.info("【接口模块】缓存中查询到客户信息：{}", clientBusinessMap);
 		if (MapUtils.isEmpty(clientBusinessMap)) {
-			log.error("apikey校验不通过：{}，{}", submit.getApikey(), ExceptionEnums.ERROR_APIKEY.getMsg());
+			log.error("【接口模块】apikey校验不通过：{}，{}", submit.getApikey(), ExceptionEnums.ERROR_APIKEY.getMsg());
 			throw new ApiException(ExceptionEnums.ERROR_APIKEY);
 		}
 
@@ -44,7 +44,6 @@ public class ApikeySendCheckServiceImpl implements SendCheckService {
 		// BeanUtils.copyProperties(clientBusiness, submit);
 		submit.setClientId(clientBusiness.getId());
 		//		submit.setIpAddress(clientBusiness.getIpAddress());
-
-		log.info("apikey校验通过：{}", submit.getApikey());
+		log.info("【接口模块】apikey校验通过：{}", submit.getApikey());
 	}
 }
diff --git a/beacon-api/src/main/java/com/mashibing/api/service/sendCheck/impl/SignSendCheckServiceImpl.java b/beacon-api/src/main/java/com/mashibing/api/service/sendCheck/impl/SignSendCheckServiceImpl.java
index 1a7f87d..dd0f6e2 100644
--- a/beacon-api/src/main/java/com/mashibing/api/service/sendCheck/impl/SignSendCheckServiceImpl.java
+++ b/beacon-api/src/main/java/com/mashibing/api/service/sendCheck/impl/SignSendCheckServiceImpl.java
@@ -1,11 +1,20 @@
 package com.mashibing.api.service.sendCheck.impl;
 
+import com.mashibing.api.feignClient.CacheClient;
 import com.mashibing.api.pojo.SingleSendRequest;
 import com.mashibing.api.service.sendCheck.SendCheckService;
+import com.mashibing.common.constant.CacheConstant;
+import com.mashibing.common.constant.SMSConstant;
+import com.mashibing.common.enums.ExceptionEnums;
+import com.mashibing.common.exception.ApiException;
 import com.mashibing.common.pojo.StandardSubmit;
 import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
+import java.util.Map;
+import java.util.Set;
+
 /**
  * @author heqijun
  * @ClassName: SignSendCheckServiceImpl
@@ -16,8 +25,43 @@ import org.springframework.stereotype.Service;
 @Slf4j
 @Service("SignSendCheck")
 public class SignSendCheckServiceImpl implements SendCheckService {
+
+	@Autowired
+	CacheClient cacheClient;
+
 	@Override
 	public void check(StandardSubmit standardSubmit) {
-		log.info("Check SignSendCheck");
+		log.info("【接口模块】短信客户签名校验。。。");
+		String text = standardSubmit.getText();
+		//短信正确格式：【签名】短信内容。。。
+		//短信内容为空，显然不可能包含签名
+		if (text == null || text.isEmpty()) {
+			log.info("【接口模块-校验签名】短信无可用签名 text = {}", text);
+			throw new ApiException(ExceptionEnums.ERROR_SIGN);
+		}
+		//短信不以“【”开头或者不包含“】”，签名格式不正确
+		if (!text.startsWith(SMSConstant.SIGN_PREFIX) || !text.contains(SMSConstant.SIGN_PREFIX)) {
+			log.info("【接口模块-校验签名】短信无可用签名 text = {}", text);
+			throw new ApiException(ExceptionEnums.ERROR_SIGN);
+		}
+		//截取签名
+		String signInText = text.substring(1, text.indexOf(SMSConstant.SIGN_SUFFIX));
+		//查询缓存中的客户签名信息
+		Set<Map> clientSigns = cacheClient.smember(CacheConstant.CLIENT_SIGN + standardSubmit.getClientId());
+		if (clientSigns == null || clientSigns.isEmpty()) {
+			log.info("【接口模块-校验签名】客户无可用签名");
+			throw new ApiException(ExceptionEnums.ERROR_SIGN);
+		}
+
+		//取出签名
+		for (Map clientSign : clientSigns) {
+			String signInCache = (String) clientSign.get("signInfo");
+			if (signInCache.equals(signInText)) {
+				log.info("【接口模块】签名校验通过！text = {}", text);
+				return;
+			}
+		}
+		log.info("【接口模块-校验签名】短信无可用签名 text = {}", text);
+		throw new ApiException(ExceptionEnums.ERROR_SIGN);
 	}
 }
diff --git a/beacon-cache/src/main/java/com/mashibing/cache/controller/CacheController.java b/beacon-cache/src/main/java/com/mashibing/cache/controller/CacheController.java
index 80658ed..6e469d9 100644
--- a/beacon-cache/src/main/java/com/mashibing/cache/controller/CacheController.java
+++ b/beacon-cache/src/main/java/com/mashibing/cache/controller/CacheController.java
@@ -7,6 +7,7 @@ import org.springframework.data.redis.core.RedisTemplate;
 import org.springframework.web.bind.annotation.*;
 
 import java.util.Map;
+import java.util.Set;
 
 /**
  * @author heqijun
@@ -69,4 +70,12 @@ public class CacheController {
 		redisClient.sAdd(key, value);
 	}
 
+	@PostMapping("/smember/{key}")
+	public Set smember(@PathVariable(value = "key") String key) {
+		log.info("【缓存模块】smember: key = {}，", key);
+		Set value = redisClient.sMembers(key);
+		log.info("【缓存模块】sadd: key = {}，\nvalue = {}", key, value);
+		return value;
+	}
+
 }
diff --git a/beacon-common/src/main/java/com/mashibing/common/constant/SMSConstant.java b/beacon-common/src/main/java/com/mashibing/common/constant/SMSConstant.java
index fba6664..720d92c 100644
--- a/beacon-common/src/main/java/com/mashibing/common/constant/SMSConstant.java
+++ b/beacon-common/src/main/java/com/mashibing/common/constant/SMSConstant.java
@@ -3,7 +3,7 @@ package com.mashibing.common.constant;
 /**
  * @author heqijun
  * @ClassName: Constant
- * @Description: 短信发送获取真实ip请求头信息常量
+ * @Description: 短信发送入口侧校验常量
  * @date 2025/6/5 17:10
  */
 
@@ -13,4 +13,8 @@ public class SMSConstant {
 
 	public static final String X_FORWARDED_FOR = "x-forwarded-for";
 
+	public static final String SIGN_PREFIX = "【";
+
+	public static final String SIGN_SUFFIX = "】";
+
 }
diff --git a/beacon-common/src/main/java/com/mashibing/common/pojo/StandardSubmit.java b/beacon-common/src/main/java/com/mashibing/common/pojo/StandardSubmit.java
index 7a721d5..d7f2065 100644
--- a/beacon-common/src/main/java/com/mashibing/common/pojo/StandardSubmit.java
+++ b/beacon-common/src/main/java/com/mashibing/common/pojo/StandardSubmit.java
@@ -22,7 +22,7 @@ public class StandardSubmit {
 	@Description("当前短信的唯一标识")
 	private Long sequenceId;
 
-	@Description("客户端ID")
+	@Description("客户ID")
 	private Long clientId;
 
 	@Description("客户端的ip白名单")