diff --git a/CMakeLists.txt b/CMakeLists.txt
index 23bd149..1905c17 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -145,10 +145,10 @@ install(DIRECTORY ${CMAKE_SOURCE_DIR}/bin/platforms/
 set(CPACK_PACKAGE_NAME "Viewer")
 set(CPACK_PACKAGE_VENDOR "Lorenzo Zhao")
 set(CPACK_PACKAGE_DESCRIPTION_SUMMARY "Depth Camera Control System")
-set(CPACK_PACKAGE_VERSION "0.3.2")
+set(CPACK_PACKAGE_VERSION "0.3.3")
 set(CPACK_PACKAGE_VERSION_MAJOR "0")
 set(CPACK_PACKAGE_VERSION_MINOR "3")
-set(CPACK_PACKAGE_VERSION_PATCH "2")
+set(CPACK_PACKAGE_VERSION_PATCH "3")
 set(CPACK_PACKAGE_INSTALL_DIRECTORY "Viewer")
 
 # WiX生成器配置（用于MSI）
diff --git a/README.md b/README.md
index 9362a98..c21aebc 100644
--- a/README.md
+++ b/README.md
@@ -283,4 +283,4 @@ d330viewer/
 - 使用Qt6信号槽机制进行模块间通信
 - OpenCL kernel代码内联在C++源文件中
 - 配置使用QSettings持久化
-- 日志输出到 `bin/d330viewer.log`
+- 日志输出到 `%LOCALAPPDATA%/Viewer/Viewer/viewer.log`（例如 `C:/Users/<用户名>/AppData/Local/Viewer/Viewer/viewer.log`）
diff --git a/src/main.cpp b/src/main.cpp
index d0c250f..40a3063 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,12 +1,15 @@
 #include <QApplication>
 #include <QDateTime>
 #include <QDir>
+#include <QStandardPaths>
+
 #include "gui/MainWindow.h"
 #include "core/Logger.h"
 
-// Custom message handler to redirect qDebug output to Logger
+// Redirect Qt log output to file logger.
 void messageHandler(QtMsgType type, const QMessageLogContext &context, const QString &msg)
 {
+    Q_UNUSED(context);
     Logger *logger = Logger::instance();
 
     switch (type) {
@@ -30,27 +33,30 @@ int main(int argc, char *argv[])
 {
     QApplication app(argc, argv);
 
-    // 设置应用程序信息
     app.setOrganizationName("Viewer");
     app.setApplicationName("Viewer");
-    app.setApplicationVersion("0.3.2");
+    app.setApplicationVersion("0.3.3");
 
-    // 初始化Logger（在可执行文件同目录下）
-    QString logPath = QCoreApplication::applicationDirPath() + "/viewer.log";
+    // Prefer LocalAppData so MSI installs under Program Files can always write logs.
+    QString logDir = QStandardPaths::writableLocation(QStandardPaths::AppLocalDataLocation);
+    if (logDir.isEmpty()) {
+        logDir = QCoreApplication::applicationDirPath();
+    }
+    QDir().mkpath(logDir);
+
+    const QString logPath = QDir(logDir).filePath("viewer.log");
     Logger::instance()->setLogFile(logPath);
-    Logger::instance()->setMaxLines(10000);  // 保留最新10000行
+    Logger::instance()->setMaxLines(10000);
 
-    // 安装消息处理器
     qInstallMessageHandler(messageHandler);
 
     qDebug() << "Viewer started";
     qDebug() << "Log file:" << logPath;
 
-    // 创建并显示主窗口
     MainWindow mainWindow;
     mainWindow.show();
 
-    int result = app.exec();
+    const int result = app.exec();
 
     qDebug() << "Viewer exiting";