diff --git a/intc-modules/intc-iot/src/main/java/com/intc/iot/controller/IotController.java b/intc-modules/intc-iot/src/main/java/com/intc/iot/controller/IotController.java
index d20df30..461538b 100644
--- a/intc-modules/intc-iot/src/main/java/com/intc/iot/controller/IotController.java
+++ b/intc-modules/intc-iot/src/main/java/com/intc/iot/controller/IotController.java
@@ -2099,6 +2099,10 @@ public class IotController extends BaseController {
     }
 
     private boolean cachePendingSolarSalinity(Device device, Double salinityCompensation) {
+        if (device.getSerialNum() == null || device.getSerialNum().isBlank()) {
+            log.warn("太阳能网控盐度缓存失败: deviceId={}, serialNum为空", device.getId());
+            return false;
+        }
         try {
             Map<String, Object> cacheValue = new java.util.HashMap<>();
             cacheValue.put("deviceId", device.getId());
@@ -2107,20 +2111,13 @@ public class IotController extends BaseController {
             cacheValue.put("salinityCompensation", salinityCompensation);
             cacheValue.put("updatedAt", System.currentTimeMillis());
             String cacheJson = cn.hutool.json.JSONUtil.toJsonStr(cacheValue);
-            java.util.List<String> cacheKeys = buildPendingSolarSalinityKeys(device);
-            if (cacheKeys.isEmpty()) {
-                log.warn("太阳能网控盐度缓存失败: deviceId={}, serialNum和iotId均为空", device.getId());
-                return false;
-            }
+            String cacheKey = DeviceDataHandler.PENDING_SOLAR_SALINITY_KEY_PREFIX + device.getSerialNum();
             // 忽略租户前缀：HTTP线程写入带租户前缀，AMQP消费线程读取不带前缀，需统一
-            final String cacheJsonRef = cacheJson;
-            TenantHelper.ignore(() -> {
-                for (String key : cacheKeys) {
-                    com.intc.common.redis.utils.RedisUtils.setCacheObject(key, cacheJsonRef, Duration.ofDays(7));
-                }
-            });
-            log.info("太阳能网控盐度已缓存，等待上线补发: deviceId={}, serialNum={}, iotId={}, cacheKeys={}, salinityCompensation={}",
-                device.getId(), device.getSerialNum(), device.getIotId(), cacheKeys, salinityCompensation);
+            TenantHelper.ignore(() ->
+                com.intc.common.redis.utils.RedisUtils.setCacheObject(cacheKey, cacheJson, Duration.ofDays(7))
+            );
+            log.info("太阳能网控盐度已缓存，等待上线补发: deviceId={}, serialNum={}, salinityCompensation={}",
+                device.getId(), device.getSerialNum(), salinityCompensation);
             return true;
         } catch (Exception e) {
             log.error("缓存太阳能网控盐度失败: deviceId={}, serialNum={}, err={}",
@@ -2146,22 +2143,6 @@ public class IotController extends BaseController {
         );
     }
 
-    private java.util.List<String> buildPendingSolarSalinityKeys(Device device) {
-        java.util.List<String> keys = new java.util.ArrayList<>();
-        addPendingSolarSalinityKey(keys, device.getSerialNum());
-        addPendingSolarSalinityKey(keys, device.getIotId());
-        return keys;
-    }
-
-    private void addPendingSolarSalinityKey(java.util.List<String> keys, String cacheName) {
-        if (cacheName == null || cacheName.isBlank()) {
-            return;
-        }
-        String key = DeviceDataHandler.PENDING_SOLAR_SALINITY_KEY_PREFIX + cacheName;
-        if (!keys.contains(key)) {
-            keys.add(key);
-        }
-    }
 
     /**
      * 修改设备输入电压类型
diff --git a/intc-modules/intc-iot/src/main/java/com/intc/iot/handler/DeviceDataHandler.java b/intc-modules/intc-iot/src/main/java/com/intc/iot/handler/DeviceDataHandler.java
index 97b3590..5a19fad 100644
--- a/intc-modules/intc-iot/src/main/java/com/intc/iot/handler/DeviceDataHandler.java
+++ b/intc-modules/intc-iot/src/main/java/com/intc/iot/handler/DeviceDataHandler.java
@@ -47,9 +47,6 @@ import java.util.Date;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
-import java.util.concurrent.Executors;
-import java.util.concurrent.ScheduledExecutorService;
-import java.util.concurrent.TimeUnit;
 
 /**
  * 设备数据处理器
@@ -65,17 +62,6 @@ public class DeviceDataHandler {
     public static final String PENDING_SOLAR_SALINITY_KEY_PREFIX = "device:pending:solar:salinity:";
     private static final int DEVICE_TYPE_SOLAR_CONTROLLER = 3;
 
-    /**
-     * 太阳能盐度补发专用调度线程池（daemon线程，避免阻止JVM退出）
-     * 用于设备上线后延迟执行属性下发，确保设备已完成 MQTT 订阅
-     */
-    private static final ScheduledExecutorService SOLAR_SALINITY_SCHEDULER =
-        Executors.newSingleThreadScheduledExecutor(r -> {
-            Thread t = new Thread(r, "solar-salinity-flush");
-            t.setDaemon(true);
-            return t;
-        });
-
     /**
      * TDengine 服务，用于存储设备时序数据
      */
@@ -260,7 +246,7 @@ public class DeviceDataHandler {
             if (params != null) {
                 handleSalinitySet(deviceName, params);
             }
-           flushPendingSolarSalinity(deviceName, "属性上报");
+//           flushPendingSolarSalinity(deviceName, "属性上报");
 
             if (params != null && params.size() > 0) {
                 try {
@@ -974,12 +960,8 @@ public class DeviceDataHandler {
             log.info("[离线告警] 设备已上线，取消离线告警: {}", deviceName);
         }
 
-        // 异步延迟 1.5 秒补发缓存盐度：设备刚上线时尚未完成 MQTT 订阅，
-        // 立即下发属性会失败，等待 1.5 秒让设备完成订阅后再下发
-        SOLAR_SALINITY_SCHEDULER.schedule(
-            () -> flushPendingSolarSalinity(deviceName, "生命周期上线"),
-            1500L, TimeUnit.MILLISECONDS
-        );
+        // 设备上线后直接补发缓存盐度
+        flushPendingSolarSalinity(deviceName, "生命周期上线");
 
         // 同步更新 Device.warnCode，清除离线和休眠标志位
         setDeviceWarnCodeBit(deviceName, DefineDeviceWarnCode.DeviceOffline, false);
@@ -1060,22 +1042,17 @@ public class DeviceDataHandler {
     }
 
     private PendingSolarSalinity findPendingSolarSalinity(String deviceName, Device device) {
-        List<String> cacheNames = new java.util.ArrayList<>();
-        addCacheName(cacheNames, deviceName);
-        addCacheName(cacheNames, device.getSerialNum());
-        addCacheName(cacheNames, device.getIotId());
+        String serialNum = device.getSerialNum();
+        if (StrUtil.isBlank(serialNum)) {
+            return null;
+        }
 
         // 太阳能盐度缓存为跨上下文共享数据（HTTP线程写入 + AMQP消费线程读取），
         // 必须忽略租户前缀，避免写入带租户前缀而读取不带前缀导致 key 不匹配
         return TenantHelper.ignore(() -> {
-            for (String cacheName : cacheNames) {
-                String redisKey = PENDING_SOLAR_SALINITY_KEY_PREFIX + cacheName;
-                Object rawPending = RedisUtils.getCacheObject(redisKey);
-                if (rawPending != null) {
-                    return new PendingSolarSalinity(redisKey, rawPending);
-                }
-            }
-            return null;
+            String redisKey = PENDING_SOLAR_SALINITY_KEY_PREFIX + serialNum;
+            Object rawPending = RedisUtils.getCacheObject(redisKey);
+            return rawPending != null ? new PendingSolarSalinity(redisKey, rawPending) : null;
         });
     }
 
@@ -1093,28 +1070,9 @@ public class DeviceDataHandler {
             trigger, deviceName, device.getId(), device.getSerialNum(), device.getIotId());
     }
 
-    private void addCacheName(List<String> cacheNames, String cacheName) {
-        if (StrUtil.isBlank(cacheName) || cacheNames.contains(cacheName)) {
-            return;
-        }
-        cacheNames.add(cacheName);
-    }
-
     private void clearPendingSolarSalinity(String deviceName, Device device, String matchedRedisKey) {
         // 忽略租户前缀，确保与写入侧 key 一致（写入在 HTTP 线程，删除在 AMQP 线程）
-        TenantHelper.ignore(() -> {
-            RedisUtils.deleteObject(matchedRedisKey);
-            deletePendingSolarSalinityByName(deviceName);
-            deletePendingSolarSalinityByName(device.getSerialNum());
-            deletePendingSolarSalinityByName(device.getIotId());
-        });
-    }
-
-    private void deletePendingSolarSalinityByName(String cacheName) {
-        if (StrUtil.isBlank(cacheName)) {
-            return;
-        }
-        RedisUtils.deleteObject(PENDING_SOLAR_SALINITY_KEY_PREFIX + cacheName);
+        TenantHelper.ignore(() -> RedisUtils.deleteObject(matchedRedisKey));
     }
 
     private static class PendingSolarSalinity {