diff --git a/Src/nmNum/nmSubWnd/nmSubWndMain.cpp b/Src/nmNum/nmSubWnd/nmSubWndMain.cpp
index ac6332a..98c75e3 100644
--- a/Src/nmNum/nmSubWnd/nmSubWndMain.cpp
+++ b/Src/nmNum/nmSubWnd/nmSubWndMain.cpp
@@ -2419,10 +2419,16 @@ void nmSubWndMain::displaySetting()
 void nmSubWndMain::updateMapByDataManager(nmDataAnalyzeManager* pDataManager)
 {
     // 删除原来的图元信息
-    if(m_pWxPlot == nullptr) {
+    if(m_pWxPlot == nullptr || pDataManager == nullptr) {
         return;
     }
 
+    foreach(nmDataAnalyzeManager* pManager, nmDataAnalyzeManager::s_mapDataAnalManager.values()) {
+        if(pManager != nullptr && pManager != pDataManager && pManager->getPlot() == m_pWxPlot) {
+            pManager->setPlot(nullptr);
+        }
+    }
+
     // 更新对应的Plot成员变量
     pDataManager->setPlot(m_pWxPlot);
 
diff --git a/Src/nmNum/nmSubWnd/nmSubWndSubWxsAnalyzeController.cpp b/Src/nmNum/nmSubWnd/nmSubWndSubWxsAnalyzeController.cpp
index 398598d..2706a04 100644
--- a/Src/nmNum/nmSubWnd/nmSubWndSubWxsAnalyzeController.cpp
+++ b/Src/nmNum/nmSubWnd/nmSubWndSubWxsAnalyzeController.cpp
@@ -40,16 +40,17 @@ void nmSubWndSubWxsAnalyzeController::updateWindowsForCurrentAnalyze(ZxMainWindo
 
     ZxTabWidget* pTabWx = pMainWindow->getCurTabWx();
     QVector<iSubWnd*> vecSubWnds = pMainWindow->getAllSubWndsOf(pTabWx);
+    nmDataAnalyzeManager* pManager = nmDataAnalyzeManager::getInstanceByFitting(pCurSubWndF);
     foreach (iSubWnd* pSub, vecSubWnds) {
         nmSubWndMain* pMap = dynamic_cast<nmSubWndMain*>(pSub);
         if(nullptr != pMap) {
-            pMap->updateMapByDataManager(nmDataAnalyzeManager::getInstanceByFitting(pCurSubWndF));
+            pMap->updateMapByDataManager(pManager);
         }
 
         nmSubWndGrid* pSubWndGrid = dynamic_cast<nmSubWndGrid*>(pSub);
         if(nullptr != pSubWndGrid) {
-            QObject::disconnect(nmDataAnalyzeManager::getInstanceByFitting(pCurSubWndF), SIGNAL(dataChanged()), pSubWndGrid, SLOT(updateGrid()));
-            QObject::connect(nmDataAnalyzeManager::getInstanceByFitting(pCurSubWndF), SIGNAL(dataChanged()), pSubWndGrid, SLOT(updateGrid()), Qt::QueuedConnection);
+            QObject::disconnect(pManager, SIGNAL(dataChanged()), pSubWndGrid, SLOT(updateGrid()));
+            QObject::connect(pManager, SIGNAL(dataChanged()), pSubWndGrid, SLOT(updateGrid()), Qt::QueuedConnection);
             pSubWndGrid->updateGrid();
         }
     }
diff --git a/Src/nmNum/nmSubWnd/nmSubWndUtils.cpp b/Src/nmNum/nmSubWnd/nmSubWndUtils.cpp
index 10a544c..8516ed6 100644
--- a/Src/nmNum/nmSubWnd/nmSubWndUtils.cpp
+++ b/Src/nmNum/nmSubWnd/nmSubWndUtils.cpp
@@ -1167,12 +1167,25 @@ bool nmSubWndUtils::eventFilter(QObject* pObject, QEvent* pEvent)
 void nmSubWndUtils::detachFittingPlot(iSubWndFitting* pSubWndF)
 {
     nmDataAnalyzeManager* pDataManager = nmDataAnalyzeManager::findManagerByFitting(pSubWndF);
-    // 当前画布可能已经切换到其他分析，只清理由被关闭分析正在展示的图元。
-    if(pDataManager != nullptr && nmDataAnalyzeManager::getCurrentFitting() == pSubWndF) {
-        nmGuiPlot* pPlot = pDataManager->getPlot();
-        if(pPlot != nullptr) {
-            // 画布图元引用DataManager中的数据，释放数据前先移除仍在显示的图元。
-            pPlot->deleteAllPlotObjs();
+    if(pDataManager == nullptr) {
+        return;
+    }
+
+    nmGuiPlot* pPlot = pDataManager->getPlot();
+    if(pPlot == nullptr) {
+        return;
+    }
+
+    // 关闭页签时可能会先触发页签切换，导致Map短暂刷新到待关闭分析。
+    // 以DataManager是否仍绑定Plot判断Map是否实际展示该分析，避免只看currentFitting误判。
+    pPlot->deleteAllPlotObjs();
+    pDataManager->setPlot(nullptr);
+
+    if(nmDataAnalyzeManager::getCurrentFitting() != pSubWndF) {
+        nmDataAnalyzeManager* pCurManager = nmDataAnalyzeManager::getCurrentInstance();
+        if(pCurManager != nullptr) {
+            pCurManager->setPlot(pPlot);
+            pPlot->setPlotsByDataManger(pCurManager);
         }
     }
 }