diff --git a/ems-admin/src/main/resources/application.yml b/ems-admin/src/main/resources/application.yml
index 828ca58..afad4c3 100644
--- a/ems-admin/src/main/resources/application.yml
+++ b/ems-admin/src/main/resources/application.yml
@@ -145,12 +145,3 @@ modbus:
   poll:
     interval: "0 */5 * * * *"  # 5分钟间隔
     timeout: 30000             # 30秒超时
-
-resilience4j:
-  circuitbreaker:
-    instances:
-      modbusOperation:
-        failure-rate-threshold: 50
-        minimum-number-of-calls: 5
-        sliding-window-size: 10
-        wait-duration-in-open-state: 10s
\ No newline at end of file
diff --git a/ems-framework/src/main/java/com/xzzn/framework/config/AsyncConfig.java b/ems-framework/src/main/java/com/xzzn/framework/config/AsyncConfig.java
index d6bead0..f0271d7 100644
--- a/ems-framework/src/main/java/com/xzzn/framework/config/AsyncConfig.java
+++ b/ems-framework/src/main/java/com/xzzn/framework/config/AsyncConfig.java
@@ -1,3 +1,4 @@
+/*
 package com.xzzn.framework.config;
 
 import org.springframework.context.annotation.Bean;
@@ -25,10 +26,13 @@ public class AsyncConfig {
         return executor;
     }
 
-    /**
+    */
+/**
      * 策略下方定时任务
-     */
-    /*@Bean("strategyTaskExecutor")
+     *//*
+
+    */
+/*@Bean("strategyTaskExecutor")
     public Executor strategyTaskExecutor() {
         ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
         executor.setCorePoolSize(5);
@@ -39,5 +43,7 @@ public class AsyncConfig {
         executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
         executor.initialize();
         return executor;
-    }*/
+    }*//*
+
 }
+*/
diff --git a/ems-framework/src/main/java/com/xzzn/framework/manager/ModbusConnectionManager.java b/ems-framework/src/main/java/com/xzzn/framework/manager/ModbusConnectionManager.java
index 386c919..9529d6d 100644
--- a/ems-framework/src/main/java/com/xzzn/framework/manager/ModbusConnectionManager.java
+++ b/ems-framework/src/main/java/com/xzzn/framework/manager/ModbusConnectionManager.java
@@ -2,17 +2,22 @@ package com.xzzn.framework.manager;
 
 import com.ghgande.j2mod.modbus.net.TCPMasterConnection;
 import com.xzzn.ems.domain.EmsDevicesSetting;
+import com.xzzn.ems.mapper.EmsDevicesSettingMapper;
 import org.apache.commons.pool2.impl.GenericObjectPool;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.ApplicationArguments;
 import org.springframework.boot.ApplicationRunner;
 import org.springframework.stereotype.Component;
 
-import javax.annotation.PostConstruct;
+import javax.annotation.PreDestroy;
 import java.net.InetAddress;
+import java.util.ArrayList;
+import java.util.List;
 import java.util.Map;
 import java.util.concurrent.*;
+import java.util.stream.Collectors;
 
 @Component
 public class ModbusConnectionManager implements ApplicationRunner {
@@ -27,16 +32,18 @@ public class ModbusConnectionManager implements ApplicationRunner {
     private long timeBetweenEvictionRunsMillis = 30000;
     private long minEvictableIdleTimeMillis = 60000;
 
+    private ScheduledExecutorService scheduler;
+    @Autowired
+    private EmsDevicesSettingMapper deviceRepo;
 
     @Override
-    public void run(ApplicationArguments args) throws Exception {
+   public void run(ApplicationArguments args) throws Exception {
         init();
     }
 
-    @PostConstruct
     public void init() {
         // 启动心跳检测线程
-        ScheduledExecutorService scheduler = Executors.newSingleThreadScheduledExecutor();
+        scheduler = Executors.newSingleThreadScheduledExecutor();
         scheduler.scheduleAtFixedRate(this::heartbeatCheck, 1, 5, TimeUnit.MINUTES);
         logger.info("Modbus连接管理器已初始化");
     }
@@ -84,27 +91,49 @@ public class ModbusConnectionManager implements ApplicationRunner {
      * 心跳检测
      */
     private void heartbeatCheck() {
-        logger.debug("开始监控Modbus连接池状态");
+        logger.info("开始监控Modbus连接池状态，当前连接数: {}", connectionPool.size());
 
-        connectionPool.forEach((id, wrapper) -> {
+        // 步骤1：获取所有活跃设备列表（与轮询逻辑共用同一批设备）
+        List<EmsDevicesSetting> activeDevices = null;
+        if (activeDevices == null || activeDevices.isEmpty()) {
+            logger.warn("无活跃设备，心跳检测仅清理无效连接");
+        }
+
+        // 步骤2：清理无效连接（遍历连接池，移除已失效的连接）
+        List<Integer> invalidDeviceIds = new ArrayList<>();
+        connectionPool.forEach((deviceId, wrapper) -> {
             try {
                 if (!wrapper.isActive()) {
-                    logger.warn("连接{}已失效，移除连接", id);
-                    connectionPool.remove(id);
+                    logger.info("连接{}已失效，移除连接", deviceId);
+                    invalidDeviceIds.add(deviceId);
                     wrapper.close();
                 }
             } catch (Exception e) {
-                logger.error("心跳检测异常: {}", id, e);
+                logger.error("心跳检测异常: {}", deviceId, e);
             }
         });
 
-        // 维持最小空闲连接
-        try {
-            while (connectionPool.size() < minIdle) {
-                preloadCriticalConnection();
+        // 批量移除无效连接（避免边遍历边修改）
+        invalidDeviceIds.forEach(connectionPool::remove);
+        logger.debug("移除无效连接后，连接池大小: {}", connectionPool.size());
+
+        // 步骤3：补充关键设备的连接（优先保障活跃设备的连接存在）
+        if (!activeDevices.isEmpty()) {
+            // 3.1 先为所有活跃设备预加载连接（确保需要轮询的设备有连接）
+            preloadCriticalConnection(activeDevices);
+
+            // 3.2 若连接数仍不足minIdle，补充额外连接（可选，避免连接池过小）
+            int currentSize = connectionPool.size();
+            if (currentSize < minIdle) {
+                logger.info("连接数{}不足最小空闲数{}，补充额外连接", currentSize, minIdle);
+                // 从活跃设备中选未创建连接的设备补充（避免重复创建）
+                List<EmsDevicesSetting> needMoreDevices = activeDevices.stream()
+                        .filter(device -> !connectionPool.containsKey(Math.toIntExact(device.getId())))
+                        .limit(minIdle - currentSize) // 只补充差额
+                        .collect(Collectors.toList());
+
+                preloadCriticalConnection(needMoreDevices); // 复用预加载方法
             }
-        } catch (Exception e) {
-            logger.error("预加载连接失败", e);
         }
     }
 
@@ -112,17 +141,29 @@ public class ModbusConnectionManager implements ApplicationRunner {
      * 预加载关键连接
      */
 
-    private void preloadCriticalConnection() {
-        // 这里应根据实际业务逻辑选择需要预加载的设备
+    private void preloadCriticalConnection(List<EmsDevicesSetting> devices) {
         // 简化示例，不实现具体逻辑
-        logger.debug("预加载连接: 连接池当前大小={}, 最小空闲={}", connectionPool.size(), minIdle);
+        logger.info("预加载连接: 连接池当前大小={}, 最小空闲={}", connectionPool.size(), minIdle);
+        devices.forEach(device -> {
+            try {
+                Integer deviceId = Math.toIntExact(device.getId());
+                if (!connectionPool.containsKey(deviceId)) {
+                    getConnection(device); // 复用已有创建逻辑
+                }
+            } catch (Exception e) {
+                logger.warn("预加载设备{}连接失败", device.getId(), e);
+            }
+        });
     }
 
     /**
      * 移除最久未使用的空闲连接
      */
-
     private void evictIdleConnection() {
+        if (connectionPool.isEmpty()) {
+            return;
+        }
+
         ModbusConnectionWrapper oldestWrapper = null;
         long oldestAccessTime = Long.MAX_VALUE;
 
@@ -140,6 +181,15 @@ public class ModbusConnectionManager implements ApplicationRunner {
         }
     }
 
+    // 移除指定设备连接
+    public void removeConnection(Integer deviceId) {
+        ModbusConnectionWrapper wrapper = connectionPool.remove(deviceId);
+        if (wrapper != null) {
+            wrapper.close(); // 双重保障，确保连接关闭
+            logger.info("连接池主动移除设备{}的连接", deviceId);
+        }
+    }
+
     /**
      * 判断是否应该移除空连接池
      */
@@ -162,6 +212,21 @@ public class ModbusConnectionManager implements ApplicationRunner {
         }
     }
 
+    // 容器销毁时关闭线程池
+    @PreDestroy
+    public void destroy() {
+        if (scheduler != null) {
+            scheduler.shutdown();
+            try {
+                if (!scheduler.awaitTermination(5, TimeUnit.SECONDS)) {
+                    scheduler.shutdownNow();
+                }
+            } catch (InterruptedException e) {
+                scheduler.shutdownNow();
+            }
+        }
+    }
+
     // Getters and Setters
     public void setMaxTotal(int maxTotal) {
         this.maxTotal = maxTotal;
diff --git a/ems-framework/src/main/java/com/xzzn/framework/scheduler/ModbusPoller.java b/ems-framework/src/main/java/com/xzzn/framework/scheduler/ModbusPoller.java
index 94a244a..8133d7b 100644
--- a/ems-framework/src/main/java/com/xzzn/framework/scheduler/ModbusPoller.java
+++ b/ems-framework/src/main/java/com/xzzn/framework/scheduler/ModbusPoller.java
@@ -93,9 +93,9 @@ public class ModbusPoller {
             // 标记连接为无效
             if (wrapper != null) {
                 wrapper.close();
+                connectionManager.removeConnection(Integer.parseInt(device.getDeviceId()));
             }
-            // 重试机制会在这里触发
-            throw new RuntimeException("轮询设备失败", e);
+             throw new RuntimeException("轮询设备失败", e);
         }
     }