diff --git a/app/config/paths.py b/app/config/paths.py
index 65410a8..b8868ff 100644
--- a/app/config/paths.py
+++ b/app/config/paths.py
@@ -19,13 +19,15 @@ DBN_CONFIG_DIR = CONFIG_DIR / "dbn"
 
 def get_logger(name: str = "algorithm"):
     """
-    获取日志记录器的便捷函数
-
-    Args:
-        name: 日志名称
-
-    Returns:
-        logging.Logger 实例
+    获取日志记录器。主进程用 loguru，QGIS 子进程回退到标准 logging。
     """
-    from app.utils.logger import get_logger as _get_logger
-    return _get_logger(name, str(LOG_DIR))
+    try:
+        from app.utils.logger import get_logger as _get_logger
+        return _get_logger(name, str(LOG_DIR))
+    except ImportError:
+        import logging
+        logging.basicConfig(
+            level=logging.INFO,
+            format="%(asctime)s [%(threadName)s] %(levelname)-5s %(name)s - %(message)s",
+        )
+        return logging.getLogger(name)
diff --git a/app/script/run_qgis.bat b/app/script/run_qgis.bat
index d2303d5..c5e37d7 100644
--- a/app/script/run_qgis.bat
+++ b/app/script/run_qgis.bat
@@ -30,6 +30,8 @@ set "GDAL_FILENAME_IS_UTF8=YES"
 set "VSI_CACHE=TRUE"
 set "VSI_CACHE_SIZE=1000000"
 set "PATH=%QGIS_APP%\bin;%QGIS_ROOT%\apps\Qt5\bin;%QGIS_ROOT%\apps\gdal\lib;%PATH%"
+REM 强制使用 QGIS 自带的 PROJ，避免 PostgreSQL/PostGIS 的旧 proj.db 干扰
+if exist "%QGIS_ROOT%\share\proj" set "PROJ_DATA=%QGIS_ROOT%\share\proj"
 
 REM --- 启动 ---
 "%PY%\python3.exe" %*