diff --git a/Include/nmNum/nmData/nmDataAnalyzeManager.h b/Include/nmNum/nmData/nmDataAnalyzeManager.h
index f212b20..8df5c8c 100644
--- a/Include/nmNum/nmData/nmDataAnalyzeManager.h
+++ b/Include/nmNum/nmData/nmDataAnalyzeManager.h
@@ -80,6 +80,8 @@ class NM_DATA_EXPORT nmDataAnalyzeManager : public ZxDataObjectBin
         Q_OBJECT
     public:
         nmDataAnalyzeManager();
+        // 释放当前流动段分析独占的数据对象
+        ~nmDataAnalyzeManager();
 
         // 分析窗口和数据管理器的映射关系
         static QMap<iSubWndFitting*, nmDataAnalyzeManager*> s_mapDataAnalManager;
@@ -89,6 +91,8 @@ class NM_DATA_EXPORT nmDataAnalyzeManager : public ZxDataObjectBin
 
         // 根据流动段分析窗口的指针作为唯一标识
         static nmDataAnalyzeManager* getInstanceByFitting(iSubWndFitting* pSubWndF);
+        // 流动段分析窗口销毁后，移除并释放对应的数据管理器
+        static void removeInstanceByFitting(iSubWndFitting* pSubWndF);
 
         /**
         * @brief 根据流动段分析窗口指针（key）查找对应的分析管理器实例（value）
diff --git a/Include/nmNum/nmSubWnd/nmSubWndUtils.h b/Include/nmNum/nmSubWnd/nmSubWndUtils.h
index ca9a964..a1e8f19 100644
--- a/Include/nmNum/nmSubWnd/nmSubWndUtils.h
+++ b/Include/nmNum/nmSubWnd/nmSubWndUtils.h
@@ -2,6 +2,7 @@
 
 #include <QMap>
 #include <QObject>
+#include <QSet>
 #include "nmSubWnd_global.h"
 
 class iRibbonXmlCmd;
@@ -11,6 +12,7 @@ class iSubWnd;
 class iDockBaseWx;
 class ZxTabWidget;
 class QMdiSubWindow;
+class QEvent;
 class iSubWndFitting;
 
 // 本来主要是为数值部分提供SubWnd初始化构造的方法
@@ -116,11 +118,24 @@ public:
 		void slotHandleTabChange(int index);
 		// 外层MDI成果窗口切换后，同步当前流动段分析窗口和左侧数值解面板
 		void slotHandleMdiSubWindowActivated(QMdiSubWindow* pSubWindow);
+		// 关闭成果或流动段分析后，释放对应的数据管理器
+		void slotHandleFittingDestroyed(QObject* pObject);
+		// 外层成果取消关闭时，恢复正常的页签清理逻辑
+		void slotHandleMdiClosing(bool& bAllowClose);
+		// 外层成果窗口析构后，移除保存的关闭状态
+		void slotHandleMdiDestroyed(QObject* pObject);
+
+  protected:
+
+    // 在窗口仍完整时处理关闭事件，避免析构阶段访问已释放的画布对象
+    virtual bool eventFilter(QObject* pObject, QEvent* pEvent) override;
 
   private:
 
     // 监听外层MDI成果窗口切换，区别于成果窗口内部的页签切换
     void connectMdiActivation(iSubWndFitting* pSubWndF);
+    // 单独关闭流动段分析页签时，移除仍引用其数据的画布图元
+    void detachFittingPlot(iSubWndFitting* pSubWndF);
 
     // 因为边界是可以旋转的，所以真实的顺序并非ee,se,we,ne，根据索引传递，查阅真实的，比如 ee,se,we,ne
     // xIndex 从1开始，如果矩形，则分别传入，1,2,3,4  如果是圆形，则传入1
@@ -130,4 +145,9 @@ public:
 	ZxMainWindow* m_pMainWnd;
 
 	ZxTabWidget* m_pTabWx;
+
+	// destroyed信号异步处理时，通过QObject地址取回析构前保存的分析窗口key
+	QMap<QObject*, iSubWndFitting*> m_mapFittingKeys;
+	// 外层成果窗口关闭时，其画布由自身析构流程释放，不能再次主动遍历
+	QSet<QObject*> m_closingMdiChildren;
 };
diff --git a/Src/nmNum/nmData/nmDataAnalyzeManager.cpp b/Src/nmNum/nmData/nmDataAnalyzeManager.cpp
index 1fc172a..07813d5 100644
--- a/Src/nmNum/nmData/nmDataAnalyzeManager.cpp
+++ b/Src/nmNum/nmData/nmDataAnalyzeManager.cpp
@@ -293,6 +293,59 @@ ZX_DEFINE_DYNAMIC(DataAnalyzeManager, nmDataAnalyzeManager)
 }
 
 // 初始化静态成员
+nmDataAnalyzeManager::~nmDataAnalyzeManager()
+{
+    // 图元只引用数据，数据统一由DataManager释放。
+    // 关闭成果或流动段分析后，清理该分析窗口对应的全部数据。
+    // 这两个成员是借用引用或容器内对象的别名，不单独delete。
+    m_pCurDataWell = nullptr;
+    m_pNmGuiPlot = nullptr;
+
+    // 先释放容器中的数据对象，再释放其余独占的单对象数据。
+    qDeleteAll(m_vWellData);
+    m_vWellData.clear();
+    qDeleteAll(m_vFaultData);
+    m_vFaultData.clear();
+    qDeleteAll(m_vFractureData);
+    m_vFractureData.clear();
+    qDeleteAll(m_vRegionData);
+    m_vRegionData.clear();
+    qDeleteAll(m_vRegionMarkData);
+    m_vRegionMarkData.clear();
+    qDeleteAll(m_vecLayers);
+    m_vecLayers.clear();
+
+    delete m_outlineData;
+    m_outlineData = nullptr;
+    delete m_axisData;
+    m_axisData = nullptr;
+    delete m_pAutomaticFittingData;
+    m_pAutomaticFittingData = nullptr;
+    delete m_reservoirData;
+    m_reservoirData = nullptr;
+    delete m_pMeasuringScaleData;
+    m_pMeasuringScaleData = nullptr;
+    delete m_pMeasureData;
+    m_pMeasureData = nullptr;
+    delete m_pGeoRefData;
+    m_pGeoRefData = nullptr;
+    delete m_pForecastData;
+    m_pForecastData = nullptr;
+    delete m_pSensitiveData;
+    m_pSensitiveData = nullptr;
+    delete m_pDiagnosticData;
+    m_pDiagnosticData = nullptr;
+    delete m_pebiPvtPara;
+    m_pebiPvtPara = nullptr;
+    delete m_pMixedResults;
+    m_pMixedResults = nullptr;
+    delete m_pLayerData;
+    m_pLayerData = nullptr;
+    delete m_pTimeStep;
+    m_pTimeStep = nullptr;
+
+}
+
 QMap<iSubWndFitting*, nmDataAnalyzeManager*> nmDataAnalyzeManager::s_mapDataAnalManager;
 iSubWndFitting* nmDataAnalyzeManager::s_pCurSubWndFitting = nullptr;
 
@@ -307,6 +360,21 @@ nmDataAnalyzeManager* nmDataAnalyzeManager::getInstanceByFitting(iSubWndFitting*
     return pInstance;
 }
 
+void nmDataAnalyzeManager::removeInstanceByFitting(iSubWndFitting* pSubWndF)
+{
+    if(pSubWndF == nullptr) {
+        return;
+    }
+
+    // take()先解除窗口和manager的映射，避免析构期间再次找到待释放对象。
+    nmDataAnalyzeManager* pInstance = s_mapDataAnalManager.take(pSubWndF);
+    if(s_pCurSubWndFitting == pSubWndF) {
+        s_pCurSubWndFitting = nullptr;
+    }
+
+    delete pInstance;
+}
+
 nmDataAnalyzeManager* nmDataAnalyzeManager::getCurrentInstance()
 {
     if(s_mapDataAnalManager.contains(s_pCurSubWndFitting)) {
diff --git a/Src/nmNum/nmPlot/nmObjLineCrack.cpp b/Src/nmNum/nmPlot/nmObjLineCrack.cpp
index 4227d2a..c825dbd 100644
--- a/Src/nmNum/nmPlot/nmObjLineCrack.cpp
+++ b/Src/nmNum/nmPlot/nmObjLineCrack.cpp
@@ -32,10 +32,8 @@ nmObjLineCrack::nmObjLineCrack(const QString& sName, \
 
 nmObjLineCrack::~nmObjLineCrack()
 {
-    if(m_fractureData != nullptr) {
-        delete m_fractureData;
-        m_fractureData = nullptr;
-    }
+    // 裂缝数据由DataManager统一释放，图元只保存引用。
+    m_fractureData = nullptr;
 }
 
 void nmObjLineCrack::init(const QString& sName, \
diff --git a/Src/nmNum/nmPlot/nmObjPointWell.cpp b/Src/nmNum/nmPlot/nmObjPointWell.cpp
index f4e07d0..ff31794 100644
--- a/Src/nmNum/nmPlot/nmObjPointWell.cpp
+++ b/Src/nmNum/nmPlot/nmObjPointWell.cpp
@@ -69,11 +69,8 @@ nmObjPointWell::nmObjPointWell(const QString& sName, \
 
 nmObjPointWell::~nmObjPointWell()
 {
-	if (m_pNmWellData != nullptr)
-	{
-		delete m_pNmWellData;
-		m_pNmWellData = nullptr;
-	}
+	// 井数据由DataManager统一释放，图元只保存引用。
+	m_pNmWellData = nullptr;
 }
 
 void nmObjPointWell::init(const QString& sName, \
diff --git a/Src/nmNum/nmPlot/nmObjPolygonOutline.cpp b/Src/nmNum/nmPlot/nmObjPolygonOutline.cpp
index 1195dc9..e56f461 100644
--- a/Src/nmNum/nmPlot/nmObjPolygonOutline.cpp
+++ b/Src/nmNum/nmPlot/nmObjPolygonOutline.cpp
@@ -31,10 +31,8 @@ nmObjPolygonOutline::nmObjPolygonOutline(const QString& sName, \
 
 nmObjPolygonOutline::~nmObjPolygonOutline()
 {
-    if (m_outlineData != nullptr) {
-        delete m_outlineData;
-        m_outlineData = nullptr;
-    }
+    // 边界数据由DataManager统一释放，图元只保存引用。
+    m_outlineData = nullptr;
 }
 
 void nmObjPolygonOutline::init(const QString& sName, \
diff --git a/Src/nmNum/nmPlot/nmObjRectOutline.cpp b/Src/nmNum/nmPlot/nmObjRectOutline.cpp
index a174e5c..95af62e 100644
--- a/Src/nmNum/nmPlot/nmObjRectOutline.cpp
+++ b/Src/nmNum/nmPlot/nmObjRectOutline.cpp
@@ -35,10 +35,8 @@ nmObjRectOutline::nmObjRectOutline(const QString& sName, \
 
 nmObjRectOutline::~nmObjRectOutline()
 {
-    if(m_outlineData != nullptr) {
-        delete m_outlineData;
-        m_outlineData = nullptr;
-    }
+    // 边界数据由DataManager统一释放，图元只保存引用。
+    m_outlineData = nullptr;
 }
 
 void nmObjRectOutline::init(const QString& sName, \
diff --git a/Src/nmNum/nmPlot/nmObjRegion.cpp b/Src/nmNum/nmPlot/nmObjRegion.cpp
index 47a582d..298dc4e 100644
--- a/Src/nmNum/nmPlot/nmObjRegion.cpp
+++ b/Src/nmNum/nmPlot/nmObjRegion.cpp
@@ -34,10 +34,8 @@ nmObjRegion::nmObjRegion(const QString& sName, \
 
 nmObjRegion::~nmObjRegion()
 {
-    if(m_regionData != nullptr) {
-        delete m_regionData;
-        m_regionData = nullptr;
-    }
+    // 复合区数据由DataManager统一释放，图元只保存引用。
+    m_regionData = nullptr;
 
     if(m_regionMark != nullptr) {
         m_regionMark = nullptr;
diff --git a/Src/nmNum/nmPlot/nmObjRegionMark.cpp b/Src/nmNum/nmPlot/nmObjRegionMark.cpp
index 877d668..e3491af 100644
--- a/Src/nmNum/nmPlot/nmObjRegionMark.cpp
+++ b/Src/nmNum/nmPlot/nmObjRegionMark.cpp
@@ -46,10 +46,8 @@ nmObjRegionMark::nmObjRegionMark(const QString& sName, \
 
 nmObjRegionMark::~nmObjRegionMark()
 {
-    if(m_regionMarkData != nullptr) {
-        delete m_regionMarkData;
-        m_regionMarkData = nullptr;
-    }
+    // 区域标记数据由DataManager统一释放，图元只保存引用。
+    m_regionMarkData = nullptr;
 }
 
 QColor nmObjRegionMark::generateColor(int index)
diff --git a/Src/nmNum/nmPlot/nmObjRoundOutline.cpp b/Src/nmNum/nmPlot/nmObjRoundOutline.cpp
index 21cc955..589ae9a 100644
--- a/Src/nmNum/nmPlot/nmObjRoundOutline.cpp
+++ b/Src/nmNum/nmPlot/nmObjRoundOutline.cpp
@@ -31,10 +31,8 @@ nmObjRoundOutline::nmObjRoundOutline(const QString& sName, \
 
 nmObjRoundOutline::~nmObjRoundOutline()
 {
-  if (m_outlineData != nullptr) {
-    delete m_outlineData;
-    m_outlineData = nullptr;
-  }
+  // 边界数据由DataManager统一释放，图元只保存引用。
+  m_outlineData = nullptr;
 }
 
 void nmObjRoundOutline::init(const QString& sName, \
diff --git a/Src/nmNum/nmSubWnd/nmSubWndUtils.cpp b/Src/nmNum/nmSubWnd/nmSubWndUtils.cpp
index fd4932b..10a544c 100644
--- a/Src/nmNum/nmSubWnd/nmSubWndUtils.cpp
+++ b/Src/nmNum/nmSubWnd/nmSubWndUtils.cpp
@@ -1,6 +1,7 @@
 #include "zxLogInstance.h"
 #include "iRibbonXmlCmd.h"
 #include <QDebug>
+#include <QEvent>
 #include <QMdiArea>
 #include <QMdiSubWindow>
 #include "zxSysUtils.h"
@@ -1108,8 +1109,27 @@ void nmSubWndUtils::connectMdiActivation(iSubWndFitting* pSubWndF)
         return;
     }
 
+    // 关闭成果窗口或流动段分析页签时，都会销毁对应的iSubWndFitting。
+    // 在Close事件中先解除图元引用，队列槽再等子对象完成析构后释放数据管理器。
+    m_mapFittingKeys.insert(pSubWndF, pSubWndF);
+    pSubWndF->installEventFilter(this);
+    connect(pSubWndF, SIGNAL(destroyed(QObject*)),
+            this, SLOT(slotHandleFittingDestroyed(QObject*)),
+            static_cast<Qt::ConnectionType>(Qt::QueuedConnection | Qt::UniqueConnection));
+
     ZxMdiSubWindow* pMdiChild = pSubWndF->getMdiChild();
     ZxMainWindow* pMainWnd = pSubWndF->getMainWindow();
+    if(pMdiChild != nullptr) {
+        // 外层成果关闭时先记录状态，避免子窗口析构期间主动遍历半析构画布。
+        pMdiChild->installEventFilter(this);
+        connect(pMdiChild, SIGNAL(sigConformClosing(bool&)),
+                this, SLOT(slotHandleMdiClosing(bool&)),
+                Qt::UniqueConnection);
+        connect(pMdiChild, SIGNAL(destroyed(QObject*)),
+                this, SLOT(slotHandleMdiDestroyed(QObject*)),
+                Qt::UniqueConnection);
+    }
+
     if(pMdiChild == nullptr || pMainWnd == nullptr || pMdiChild->mdiArea() == nullptr) {
         return;
     }
@@ -1122,6 +1142,63 @@ void nmSubWndUtils::connectMdiActivation(iSubWndFitting* pSubWndF)
             Qt::UniqueConnection);
 }
 
+// 在窗口仍完整时处理关闭事件
+bool nmSubWndUtils::eventFilter(QObject* pObject, QEvent* pEvent)
+{
+    if(pEvent == nullptr || pEvent->type() != QEvent::Close) {
+        return QObject::eventFilter(pObject, pEvent);
+    }
+
+    ZxMdiSubWindow* pMdiChild = qobject_cast<ZxMdiSubWindow*>(pObject);
+    if(pMdiChild != nullptr) {
+        m_closingMdiChildren.insert(pMdiChild);
+        return QObject::eventFilter(pObject, pEvent);
+    }
+
+    iSubWndFitting* pSubWndF = m_mapFittingKeys.value(pObject, nullptr);
+    if(pSubWndF != nullptr && !m_closingMdiChildren.contains(pSubWndF->getMdiChild())) {
+        detachFittingPlot(pSubWndF);
+    }
+
+    return QObject::eventFilter(pObject, pEvent);
+}
+
+// 单独关闭流动段分析页签时，先解除画布图元对数据的引用
+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();
+        }
+    }
+}
+
+// 流动段分析窗口销毁后，释放对应的数据管理器
+void nmSubWndUtils::slotHandleFittingDestroyed(QObject* pObject)
+{
+    // 队列槽执行时窗口对象已经销毁，只使用析构前保存的地址作为静态映射key。
+    iSubWndFitting* pSubWndF = m_mapFittingKeys.take(pObject);
+    nmDataAnalyzeManager::removeInstanceByFitting(pSubWndF);
+}
+
+// 外层成果取消关闭时，移除Close事件过滤器提前保存的状态
+void nmSubWndUtils::slotHandleMdiClosing(bool& bAllowClose)
+{
+    if(!bAllowClose) {
+        m_closingMdiChildren.remove(sender());
+    }
+}
+
+// 外层成果窗口析构后，移除仅用于生命周期判断的地址
+void nmSubWndUtils::slotHandleMdiDestroyed(QObject* pObject)
+{
+    m_closingMdiChildren.remove(pObject);
+}
+
 // 切换外层MDI成果窗口后，同步当前流动段分析窗口
 void nmSubWndUtils::slotHandleMdiSubWindowActivated(QMdiSubWindow* pSubWindow)
 {