diff --git a/gui.py b/gui.py
index c9f3fea..1ff03ef 100644
--- a/gui.py
+++ b/gui.py
@@ -399,18 +399,14 @@ def index():
                 
                 print("DEBUG: invoking PowerShell SaveFileDialog...")
                 
-                # 使用 run.io_bound 在线程中执行，避免阻塞 UI
-                def run_ps():
-                    result = subprocess.run(
-                        ["powershell", "-Command", ps_script],
-                        capture_output=True,
-                        text=True,
-                        startupinfo=startupinfo
-                    )
-                    return result.stdout.strip()
-
-                from nicegui import run
-                save_path = await run.io_bound(run_ps)
+                # 在 native 模式下直接同步执行，不使用 run.io_bound()
+                result = subprocess.run(
+                    ["powershell", "-Command", ps_script],
+                    capture_output=True,
+                    text=True,
+                    startupinfo=startupinfo
+                )
+                save_path = result.stdout.strip()
 
                 if save_path:
                     print(f"DEBUG: PowerShell returned path: {save_path}")