diff --git a/sim_scenes/solar_system/transit_of_venus_mercury.py b/sim_scenes/solar_system/transit_of_venus_mercury.py
index 56521e01631520a58d9791436c52aeec1923b774..e8cf653650677ab50cbed28b53585a2ef12ace02 100644
--- a/sim_scenes/solar_system/transit_of_venus_mercury.py
+++ b/sim_scenes/solar_system/transit_of_venus_mercury.py
@@ -29,6 +29,8 @@ if __name__ == '__main__':
               size_scale=5e1)  # 金星放大 50 倍，距离保持不变
     ]
 
+    # 让太阳的旋转速度放慢10倍
+    sun.rotation_speed /= 10
 
     def on_ready():
         from ursina import camera
@@ -41,10 +43,6 @@ if __name__ == '__main__':
             camera.clip_plane_near = 0.1
             camera.clip_plane_far = 1000000
 
-        # 让太阳的旋转速度放慢10倍
-        sun.rotation_speed /= 10
-
-
     def on_timer_changed(time_data: TimeData):
         # 时时刻刻的让地球看向太阳（摄像机跟随地球看向太阳）
         earth.planet.look_at(sun.planet)