diff --git a/src/CounterDrone.Core/Algorithms/GaussianPuffDispersion.cs b/src/CounterDrone.Core/Algorithms/GaussianPuffDispersion.cs
index 245c718..7bbb49b 100644
--- a/src/CounterDrone.Core/Algorithms/GaussianPuffDispersion.cs
+++ b/src/CounterDrone.Core/Algorithms/GaussianPuffDispersion.cs
@@ -25,6 +25,7 @@ namespace CounterDrone.Core.Algorithms
         public float EffectiveRadius => _currentRadius;
         public ParticleParams Particles { get; } = new();
         public bool IsDissipated { get; private set; }
+        public int Phase => _inPhase3 ? 3 : (_elapsed < 0.01f ? 1 : 2);
 
         public void Initialize(AmmunitionSpec ammo, CombatScene env, Vector3 releasePos, float releaseTime)
         {
diff --git a/src/CounterDrone.Core/Algorithms/ICloudDispersionModel.cs b/src/CounterDrone.Core/Algorithms/ICloudDispersionModel.cs
index 3147dd6..99b97c5 100644
--- a/src/CounterDrone.Core/Algorithms/ICloudDispersionModel.cs
+++ b/src/CounterDrone.Core/Algorithms/ICloudDispersionModel.cs
@@ -13,5 +13,7 @@ namespace CounterDrone.Core.Algorithms
         float EffectiveRadius { get; }
         ParticleParams Particles { get; }
         bool IsDissipated { get; }
+        /// <summary>当前扩散阶段：1=爆轰膨胀, 2=湍流扩散, 3=高斯扩散</summary>
+        int Phase { get; }
     }
 }
diff --git a/src/CounterDrone.Core/Simulation/SimulationEngine.cs b/src/CounterDrone.Core/Simulation/SimulationEngine.cs
index 3285d84..ea56da5 100644
--- a/src/CounterDrone.Core/Simulation/SimulationEngine.cs
+++ b/src/CounterDrone.Core/Simulation/SimulationEngine.cs
@@ -241,7 +241,7 @@ namespace CounterDrone.Core.Simulation
             foreach (var d in _drones)
                 list.Add(new EntitySnapshot { EntityId = d.Id, EntityType = Models.EntityType.Drone, PosX = d.PosX, PosY = d.PosY, PosZ = d.PosZ, StateData = JsonSerializer.Serialize(new { damageStage = (int)_damageModel.GetDamageStage(1 - d.Hp), hp = d.Hp }) });
             foreach (var c in _clouds)
-                list.Add(new EntitySnapshot { EntityId = c.Id, EntityType = Models.EntityType.Cloud, PosX = c.Dispersion.Center.X, PosY = c.Dispersion.Center.Y, PosZ = c.Dispersion.Center.Z, StateData = JsonSerializer.Serialize(new { radius = c.Dispersion.Radius, opacity = c.Dispersion.Particles.Opacity }) });
+                list.Add(new EntitySnapshot { EntityId = c.Id, EntityType = Models.EntityType.Cloud, PosX = c.Dispersion.Center.X, PosY = c.Dispersion.Center.Y, PosZ = c.Dispersion.Center.Z, StateData = JsonSerializer.Serialize(new { radius = c.Dispersion.Radius, opacity = c.Dispersion.Particles.Opacity, phase = c.Dispersion.Phase }) });
             return list;
         }
     }