diff --git a/Runtime/UIParticle.cs b/Runtime/UIParticle.cs
index 0d35f65..398ae4d 100644
--- a/Runtime/UIParticle.cs
+++ b/Runtime/UIParticle.cs
@@ -60,7 +60,7 @@ namespace Coffee.UIExtensions
 
         [Tooltip("Particle effect scale")]
         [SerializeField]
-        private Vector3 m_Scale3D = new Vector3(10, 10, 10);
+        private Vector3 m_Scale3D = new Vector3(1, 1, 1);
 
         [Tooltip("Animatable material properties.\n" +
                  "If you want to change the material properties of the ParticleSystem in Animation, enable it.")]