diff --git a/scenes/func.py b/scenes/func.py
index bc43a1d1f9a0215e748c1d606a4ee53034eb7d7a..e91a508cb1d0aef607666cd0fa42c000758459eb 100644
--- a/scenes/func.py
+++ b/scenes/func.py
@@ -83,7 +83,7 @@ def ursina_run(bodies,
     body_sys = System(bodies)
     if save_as_json is not None:
         try:
-            body_sys.save_to_json(save_as_json, {"dt": dt, "position": position})
+            body_sys.save_to_json(save_as_json, {"dt": dt, "position": position, "show_trail": show_trail})
             print(f"{save_as_json} 文件生成成功！")
         except Exception as e:
             print(f"{save_as_json} 文件生成失败！" + str(e))
diff --git a/scenes/gravity_slingshot.py b/scenes/gravity_slingshot.py
index 17b58b3aeb8864faa885ced1d2715c10417182c6..6c4149770ba031b7f6402ce9b40a8ea843fb88f3 100644
--- a/scenes/gravity_slingshot.py
+++ b/scenes/gravity_slingshot.py
@@ -32,4 +32,4 @@ if __name__ == '__main__':
     # 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_MONTH, position=(0, AU, -3 * AU))
+    ursina_run(bodies, SECONDS_PER_MONTH, position=(0, AU, -3 * AU), show_trail=True)
diff --git a/scenes/sun_earth.py b/scenes/sun_earth.py
index 982bd670547b69b22fde17fa522d4be7e1620c9d..8b9f346aa14ad71844f5a61e0a07371635783b14 100644
--- a/scenes/sun_earth.py
+++ b/scenes/sun_earth.py
@@ -15,8 +15,7 @@ if __name__ == '__main__':
     太阳、地球 Sirius(size_scale=0.2, init_position=[0, 0, 0]),
     """
     bodies = [
-        Sirius(size_scale=2e1,init_position=[0,0,0]),
-        Sun(size_scale=5e1,init_position=[0,0,0]),                      # 太阳放大 50 倍
+        Sun(size_scale=5e1),                      # 太阳放大 50 倍
         Earth(size_scale=2e3, distance_scale=1),  # 地球放大 2000 倍，距离保持不变
     ]
 
@@ -26,4 +25,4 @@ if __name__ == '__main__':
     # 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, AU, -3 * AU))
+    ursina_run(bodies, SECONDS_PER_WEEK, position=(0, AU, -3 * AU), show_trail=True)
diff --git a/scenes/sun_earth_jupiter.py b/scenes/sun_earth_jupiter.py
index 2b8d2ea39777f9a28c8014af6ab207f7de0df613..54c99e3ae12d32452da5a46c65561cf8410b7dfb 100644
--- a/scenes/sun_earth_jupiter.py
+++ b/scenes/sun_earth_jupiter.py
@@ -26,4 +26,4 @@ if __name__ == '__main__':
     # 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, AU, -3 * AU))
+    ursina_run(bodies, SECONDS_PER_WEEK, position=(0, AU, -3 * AU), show_trail=True)
diff --git a/scenes/three_body_03.py b/scenes/three_body_03.py
index 82f849b807ff94a882c41f917a34a5600e38a944..09715cec9dcf7595f8637f7d0a39014a6a621bd0 100644
--- a/scenes/three_body_03.py
+++ b/scenes/three_body_03.py
@@ -59,4 +59,4 @@ if __name__ == '__main__':
     # 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_YEAR, position=(3 * AU, 3 * AU, -20 * AU))
+    ursina_run(bodies, SECONDS_PER_YEAR, position=(3 * AU, 3 * AU, -20 * AU), show_trail=True)
diff --git a/scenes/tri_bodies_sim_perfect.py b/scenes/tri_bodies_sim_perfect.py
index c4e9287262e71a1179d18e7fcdb063f522e853ca..83a5fa1fc4035744861a7dc096b7711cbef49423 100644
--- a/scenes/tri_bodies_sim_perfect.py
+++ b/scenes/tri_bodies_sim_perfect.py
@@ -53,4 +53,4 @@ if __name__ == '__main__':
     # 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_YEAR, position=(3 * AU, AU, -4 * AU))
+    ursina_run(bodies, SECONDS_PER_YEAR, position=(-2 * AU, AU, -5 * AU), show_trail=True)
diff --git a/scenes/two_body_01.py b/scenes/two_body_01.py
index 16654b4fb048d47da2b536337be40b689e7e05ac..305fda68c4c9809a7380537977da84bdabb6103b 100644
--- a/scenes/two_body_01.py
+++ b/scenes/two_body_01.py
@@ -33,4 +33,4 @@ if __name__ == '__main__':
     # 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_YEAR, position=(0, 2 * AU, -5 * AU))
\ No newline at end of file
+    ursina_run(bodies, SECONDS_PER_YEAR, position=(0, 2 * AU, -5 * AU), show_trail=True)
\ No newline at end of file
diff --git a/scenes/ursina_json_sim.py b/scenes/ursina_json_sim.py
index 254f3e4c93ea3000068e689dc35f14a610dc7348..72677ae91c1a78aebe1cfd020dc9efdca6ccde79 100644
--- a/scenes/ursina_json_sim.py
+++ b/scenes/ursina_json_sim.py
@@ -29,9 +29,10 @@ if __name__ == '__main__':
 
     dt = params["dt"] if "dt" in params else SECONDS_PER_YEAR
     position = params["position"] if "position" in params else (0, 0, 0)
+    show_trail = params["show_trail"] if "show_trail" in params else True
 
     # 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-
     json_file = None  # 指定 json_file 保存路径，则会将模拟环境天体数据保存到该json文件中
-    ursina_run(bodies, dt, position=position, save_as_json=json_file)
+    ursina_run(bodies, dt, position=position, save_as_json=json_file, show_trail=show_trail)