diff --git a/detection/src/main/java/com/njcn/gather/detection/handler/SocketFreqConverterDevService.java b/detection/src/main/java/com/njcn/gather/detection/handler/SocketFreqConverterDevService.java
index 889274b7..4d68f613 100644
--- a/detection/src/main/java/com/njcn/gather/detection/handler/SocketFreqConverterDevService.java
+++ b/detection/src/main/java/com/njcn/gather/detection/handler/SocketFreqConverterDevService.java
@@ -349,8 +349,28 @@ public class SocketFreqConverterDevService {
     }
 
     public void cleanup(String devTag) {
+        String currentUserId = this.userId;
         FormalTestManager.freqConverterDevStep = null;
         FormalTestManager.isRemoveSocket = true;
         SocketManager.removeUser(devTag);
+        clearStateIfStopped(currentUserId);
+        this.userId = null;
+        this.monitorId = null;
+    }
+
+    /**
+     * 如果设备已停止，则清除共享的运行时状态
+     * @param currentUserId 当前用户ID
+     */
+    private void clearStateIfStopped(String currentUserId) {
+        if (StrUtil.isBlank(currentUserId)) {
+            FormalTestManager.clearFreqConverterRuntimeState();
+            return;
+        }
+        String freqConverterTag = currentUserId + CnSocketUtil.FREQ_CONVERTER_TAG;
+        // 避免过早把 freqConverterTableSuffix 等全局值清掉，造成变频器无法使用全局变量
+        if (!SocketManager.isChannelActive(freqConverterTag)) {
+            FormalTestManager.clearFreqConverterRuntimeState();
+        }
     }
 }
diff --git a/detection/src/main/java/com/njcn/gather/detection/handler/SocketFreqConverterService.java b/detection/src/main/java/com/njcn/gather/detection/handler/SocketFreqConverterService.java
index dc356f89..ff5c65dd 100644
--- a/detection/src/main/java/com/njcn/gather/detection/handler/SocketFreqConverterService.java
+++ b/detection/src/main/java/com/njcn/gather/detection/handler/SocketFreqConverterService.java
@@ -9,6 +9,7 @@ import com.njcn.gather.detection.pojo.dto.FreqConverterRespDTO;
 import com.njcn.gather.detection.pojo.enums.SourceOperateCodeEnum;
 import com.njcn.gather.detection.pojo.vo.SocketDataMsg;
 import com.njcn.gather.detection.pojo.vo.SocketMsg;
+import com.njcn.gather.detection.util.socket.CnSocketUtil;
 import com.njcn.gather.detection.util.socket.FormalTestManager;
 import com.njcn.gather.detection.util.socket.SocketManager;
 import com.njcn.gather.detection.util.socket.cilent.NettyClient;
@@ -168,11 +169,15 @@ public class SocketFreqConverterService {
     }
 
     public void cleanup(String converterChannelTag) {
+        String currentUserId = this.userId;
         clearScheduleTask();
         FormalTestManager.freqConverterStep = null;
 //        FormalTestManager.stopFlag = false;
         FormalTestManager.isRemoveSocket = true;
         SocketManager.removeUser(converterChannelTag);
+        updateCurrentTestStatus();
+        clearStateIfStopped(currentUserId);
+        this.userId = null;
     }
 
     private void handleInitSerial(String converterChannelTag, FreqConverterRespDTO respDTO) {
@@ -253,6 +258,28 @@ public class SocketFreqConverterService {
         }
     }
 
+    private void updateCurrentTestStatus() {
+        if (StrUtil.isNotBlank(FormalTestManager.currentFreqConverterId)) {
+            pqFreqConverterConfigService.updateTestStatus(FormalTestManager.currentFreqConverterId, 1);
+        }
+    }
+
+    /**
+     * 如果变频器已停止，则清除共享的运行时状态
+     * @param currentUserId 当前用户ID
+     */
+    private void clearStateIfStopped(String currentUserId) {
+        if (StrUtil.isBlank(currentUserId)) {
+            FormalTestManager.clearFreqConverterRuntimeState();
+            return;
+        }
+        String devTag = currentUserId + CnSocketUtil.DEV_TAG;
+        // 避免过早把 freqConverterTableSuffix 等全局值清掉，造成设备无法使用全局变量
+        if (!SocketManager.isChannelActive(devTag)) {
+            FormalTestManager.clearFreqConverterRuntimeState();
+        }
+    }
+
     private void consumePendingDipTasks(FreqConverterStatus freqConverterStatus) {
         if (FormalTestManager.pendingDipTaskMap.isEmpty()) {
             return;
diff --git a/detection/src/main/java/com/njcn/gather/detection/util/socket/FormalTestManager.java b/detection/src/main/java/com/njcn/gather/detection/util/socket/FormalTestManager.java
index 3595d324..e773b619 100644
--- a/detection/src/main/java/com/njcn/gather/detection/util/socket/FormalTestManager.java
+++ b/detection/src/main/java/com/njcn/gather/detection/util/socket/FormalTestManager.java
@@ -226,6 +226,17 @@ public class FormalTestManager {
      */
     public static boolean isXu;
 
+    /**
+     * 清理变频器耐受实验运行态数据
+     */
+    public static void clearFreqConverterRuntimeState() {
+        freqConverterStep = null;
+        freqConverterDevStep = null;
+        currentFreqConverterId = null;
+        freqConverterTableSuffix = null;
+        pendingDipTaskMap.clear();
+    }
+
     @Data
     public static class PendingDipTask {
         private PqDipData pqDipData;