diff --git a/Src/nmNum/nmData/nmDataAnalyzeManager.cpp b/Src/nmNum/nmData/nmDataAnalyzeManager.cpp
index d2812ed..809e7dc 100644
--- a/Src/nmNum/nmData/nmDataAnalyzeManager.cpp
+++ b/Src/nmNum/nmData/nmDataAnalyzeManager.cpp
@@ -64,9 +64,47 @@
 
 #include <QCoreApplication>
 #include <QDebug>
+#include <QDir>
 #include <QFile>
+#include <QFileInfo>
 
 namespace {
+// 清空指定目录下的所有旧文件和子目录，但保留目录本身
+bool clearDirectoryContents(const QString& dirPath)
+{
+    if(dirPath.trimmed().isEmpty()) {
+        return false;
+    }
+
+    QDir dir(dirPath);
+    if(dir.isRoot()) {
+        qDebug() << QString("Refuse to clear root directory: %1").arg(dirPath);
+        return false;
+    }
+
+    if(!dir.exists()) {
+        return true;
+    }
+
+    QFileInfoList entries = dir.entryInfoList(QDir::NoDotAndDotDot | QDir::AllEntries | QDir::Hidden | QDir::System);
+    for(int i = 0; i < entries.size(); ++i) {
+        const QFileInfo& entry = entries.at(i);
+        bool bRemoved = false;
+
+        if(entry.isDir() && !entry.isSymLink()) {
+            bRemoved = clearDirectoryContents(entry.absoluteFilePath()) && dir.rmdir(entry.fileName());
+        } else {
+            bRemoved = QFile::remove(entry.absoluteFilePath());
+        }
+
+        if(!bRemoved) {
+            qDebug() << QString("Failed to remove old result item: %1").arg(entry.absoluteFilePath());
+            return false;
+        }
+    }
+
+    return true;
+}
 
 // 多条PVT曲线都可能带压力横坐标，只保存第一次读到的有效横坐标
 void setPebiPressureIfEmpty(nmDataPvtParaForPebi* pPvtPara, const QVector<double>& vecX)
@@ -3306,6 +3344,14 @@ bool nmDataAnalyzeManager::saveNmResult(QString sRstCode, iSubWndFitting* pSubWn
     if(pContextProvider == nullptr || !pContextProvider->getSaveResultDir(pSubWndF, sRstCode, sDir)) {
         return false;
     }
+
+    // sDir为当前成果窗口目录
+    // 保存前先清空成果ID目录下的旧内容，避免旧RstWnd目录或残留文件继续被加载
+    QString sResultRootPath = QFileInfo(sDir).dir().absolutePath();
+    if(!clearDirectoryContents(sResultRootPath)) {
+        return false;
+    }
+
     QString sResultPath = sDir + "/Results";
     this->ensureDirectoryExists(sResultPath);
     // 将数据写入Json文件
diff --git a/Src/nmNum/nmSubWnd/nmSubWndUtils.cpp b/Src/nmNum/nmSubWnd/nmSubWndUtils.cpp
index 4a1b255..c012ce2 100644
--- a/Src/nmNum/nmSubWnd/nmSubWndUtils.cpp
+++ b/Src/nmNum/nmSubWnd/nmSubWndUtils.cpp
@@ -725,10 +725,8 @@ bool nmSubWndUtils::saveRsts(iSubWnd* pSubWnd, \
         }
 
         // 如果存在，则对当前分析数据进行保存
-        if(pDataManager->saveNmResult(sRstName, pSubWndF)) {
-            // 保存成功
-        } else {
-            // 保存失败
+        if(!pDataManager->saveNmResult(sRstName, pSubWndF)) {
+            return false;
         }
     } else if(pSubWnd->getWndID() == "5118") {
         return true;