diff --git a/sim_scenes/earth/earth_moon.py b/sim_scenes/earth/earth_moon.py
index 07ed9a5c79de600c1342536b61210bbda9c358f2..8101238233988a4672018ec33060cacb145aed12 100644
--- a/sim_scenes/earth/earth_moon.py
+++ b/sim_scenes/earth/earth_moon.py
@@ -8,7 +8,7 @@
 # ==============================================================================
 from bodies import Earth, Moon
 from common.consts import SECONDS_PER_DAY, SECONDS_PER_WEEK, SECONDS_PER_MONTH
-from sim_scenes.func import ursina_run, camera_look_at
+from sim_scenes.func import ursina_run, camera_look_at, create_sphere_sky
 from simulators.ursina.ursina_config import UrsinaConfig
 from simulators.ursina.ursina_event import UrsinaEvent
 
@@ -30,9 +30,20 @@ if __name__ == '__main__':
 
     bodies = [earth, moon]
 
+
+    def on_ready():
+        # 运行前触发
+        create_sphere_sky(scale=8000)
+
+
+    # 运行前会触发 on_ready
+    UrsinaEvent.on_ready_subscription(on_ready)
+
     # 使用 ursina 查看的运行效果
     # 常用快捷键： P：运行和暂停  O：重新开始  I：显示天体轨迹
     # position = 左-右+、上+下-、前+后-
     ursina_run(bodies, SECONDS_PER_WEEK,
                position=(0, 100000, -1000000),
+               cosmic_bg='',
+               show_grid=False,
                show_trail=True)