diff --git a/pqs-device/pq-device/pq-device-com/src/main/java/com/njcn/device/device/service/impl/NodeDeviceServiceImpl.java b/pqs-device/pq-device/pq-device-com/src/main/java/com/njcn/device/device/service/impl/NodeDeviceServiceImpl.java
index f8abcd045..864ef67a0 100644
--- a/pqs-device/pq-device/pq-device-com/src/main/java/com/njcn/device/device/service/impl/NodeDeviceServiceImpl.java
+++ b/pqs-device/pq-device/pq-device-com/src/main/java/com/njcn/device/device/service/impl/NodeDeviceServiceImpl.java
@@ -1,7 +1,9 @@
 package com.njcn.device.device.service.impl;
 
+import cn.hutool.core.collection.CollUtil;
 import cn.hutool.core.util.StrUtil;
 import com.njcn.common.pojo.enums.common.DataStateEnum;
+import com.njcn.common.pojo.enums.response.CommonResponseEnum;
 import com.njcn.common.pojo.exception.BusinessException;
 import com.njcn.device.device.service.DeviceProcessService;
 import com.njcn.device.device.service.IDeviceService;
@@ -28,10 +30,7 @@ import org.apache.commons.collections4.ListUtils;
 import org.apache.commons.lang3.StringUtils;
 import org.springframework.stereotype.Service;
 
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Map;
-import java.util.Objects;
+import java.util.*;
 import java.util.function.Function;
 import java.util.stream.Collectors;
 
@@ -73,31 +72,59 @@ public class NodeDeviceServiceImpl implements NodeDeviceService {
         Integer nodeDevNum = node.getNodeDevNum();
         Integer maxProcessNum = node.getMaxProcessNum();
         List<Device> list = iDeviceService.lambdaQuery().eq(Device::getNodeId, nodeId).list();
-       if(CollectionUtils.isEmpty(list)){
+        if(CollectionUtils.isEmpty(list)){
            throw new BusinessException(PvDeviceResponseEnum.NO_DEVICE);
-
        }
-        List<String> deviceIdList = list.stream().map(Device::getId).collect(Collectors.toList());
-        List<DeviceProcess> deviceProcessList = deviceProcessService.lambdaQuery().in(DeviceProcess::getId, deviceIdList).list();
-        Integer devNum = list.size();
-        if(nodeDevNum<devNum){
+        if(nodeDevNum<list.size()){
             throw new BusinessException(PvDeviceResponseEnum.OVER_LIMIT);
         }
-        //单个进程支持最大装置数
-        int maxDevNum = nodeDevNum / maxProcessNum;
-
-        List<List<DeviceProcess>> partition = ListUtils.partition(deviceProcessList, maxProcessNum);
-        for (int i = 0; i < partition.size(); i++) {
-            int processNo  = i+1;
-            partition.get(i).forEach(temp->{
-                temp.setProcessNo(processNo);
-            });
+        List<String> deviceIdList = list.stream().map(Device::getId).collect(Collectors.toList());
+        List<DeviceProcess> existingProcesses = deviceProcessService.lambdaQuery().in(DeviceProcess::getId, deviceIdList).list();
+        if(existingProcesses.size() >= nodeDevNum){
+            throw new BusinessException(PvDeviceResponseEnum.OVER_LIMIT);
+        }
+        List<String> hasProcess = existingProcesses.stream().map(DeviceProcess::getId).distinct().collect(Collectors.toList());
+
+        //过滤掉已经分配的装置
+        List<String> needDevice = deviceIdList.stream().filter(it->!hasProcess.contains(it)).collect(Collectors.toList());
+        // 无待分配设备直接抛出异常（保留你的原判断）
+        if (CollUtil.isEmpty(needDevice)) {
+            throw new BusinessException(CommonResponseEnum.FAIL, "不存在未分配的进程的装置");
+        }
+        //单个进程支持最大装置数
+        int maxDevNumPerProcess = (int) Math.ceil((double) nodeDevNum / maxProcessNum);
+        Map<Integer, Long> mapCount = existingProcesses.stream().collect(Collectors.groupingBy(DeviceProcess::getProcessNo,Collectors.counting()));
+        List<DeviceProcess> poList = new ArrayList<>();
+        Iterator<String> deviceIterator = needDevice.iterator();
+
+        for (int processNo = 1; processNo <= maxProcessNum && deviceIterator.hasNext(); processNo++) {
+            Long usedCount = mapCount.getOrDefault(processNo, 0L);
+            int remainingCapacity = (int) (maxDevNumPerProcess - usedCount);
+
+            if (remainingCapacity <= 0) {
+                continue;
+            }
+            // 分配设备给当前进程
+            for (int i = 0; i < remainingCapacity && deviceIterator.hasNext(); i++) {
+                String deviceId = deviceIterator.next();
+                DeviceProcess deviceProcess = buildDeviceProcess(deviceId, processNo);
+                poList.add(deviceProcess);
+            }
+        }
+        if(CollUtil.isEmpty(poList)){
+            throw new BusinessException(CommonResponseEnum.FAIL,"不存在可以分配的进程或装置");
         }
-        List<DeviceProcess> collect = partition.stream().flatMap(List::stream).collect(Collectors.toList());
 
         //更新进程号
-        deviceProcessService.updateBatchById(collect);
+        deviceProcessService.saveBatch(poList,100);
+    }
 
+
+    private DeviceProcess buildDeviceProcess(String deviceId, Integer processNo) {
+        DeviceProcess deviceProcess = new DeviceProcess();
+        deviceProcess.setId(deviceId); // 核心修复：设置设备关联字段，而非主键id
+        deviceProcess.setProcessNo(processNo);
+        return deviceProcess;
     }
 
     @Override