diff --git a/Assets/Scenes/main.unity b/Assets/Scenes/main.unity
index 2336b3ff..5e873aae 100644
--- a/Assets/Scenes/main.unity
+++ b/Assets/Scenes/main.unity
@@ -171,24 +171,36 @@ MonoBehaviour:
   m_AudioGroupConfigs:
   - m_Name: Music
     m_Mute: 0
-    m_Volume: 1
+    m_Volume: 0.5
     m_AgentHelperCount: 1
     AudioType: 2
+    audioRolloffMode: 1
+    minDistance: 15
+    maxDistance: 50
   - m_Name: Sound
     m_Mute: 0
-    m_Volume: 1
+    m_Volume: 0.5
     m_AgentHelperCount: 4
     AudioType: 0
+    audioRolloffMode: 0
+    minDistance: 1
+    maxDistance: 500
   - m_Name: UISound
     m_Mute: 0
-    m_Volume: 1
+    m_Volume: 0.5
     m_AgentHelperCount: 4
     AudioType: 1
+    audioRolloffMode: 0
+    minDistance: 1
+    maxDistance: 500
   - m_Name: Voice
     m_Mute: 0
-    m_Volume: 1
+    m_Volume: 0.5
     m_AgentHelperCount: 1
     AudioType: 3
+    audioRolloffMode: 0
+    minDistance: 1
+    maxDistance: 500
 --- !u!1 &43232119
 GameObject:
   m_ObjectHideFlags: 0
diff --git a/Assets/TEngine/Runtime/GameFramework/Audio/AudioAgent.cs b/Assets/TEngine/Runtime/GameFramework/Audio/AudioAgent.cs
index 819b99e3..8c003432 100644
--- a/Assets/TEngine/Runtime/GameFramework/Audio/AudioAgent.cs
+++ b/Assets/TEngine/Runtime/GameFramework/Audio/AudioAgent.cs
@@ -5,42 +5,80 @@ using YooAsset;
 namespace TEngine
 {
     /// <summary>
-    /// 声音代理辅助器。
+    /// 音频代理辅助器。
     /// </summary>
     public class AudioAgent
     {
         private AudioModule _audioModule;
-        private int _id = 0;
-        public AssetOperationHandle assetOperationHandle = null;
-        private AudioSource _source = null;
-        Transform _transform = null;
+        private int _id;
+        private AudioSource _source;
+        private AssetOperationHandle _assetOperationHandle;
+        private Transform _transform;
         float _volume = 1.0f;
-        float _duration = 0;
-        float _fadeoutTimer = 0f;
-        const float FadeoutDuration = 0.2f;
-        private bool _inPool = false;
+        float _duration;
+        private float _fadeoutTimer;
+        private const float FadeoutDuration = 0.2f;
+        private bool _inPool;
 
-        enum State
+        /// <summary>
+        /// 音频代理辅助器运行时状态枚举。
+        /// </summary>
+        enum RuntimeState
         {
+            /// <summary>
+            /// 无状态。
+            /// </summary>
             None,
+            /// <summary>
+            /// 加载中状态。
+            /// </summary>
             Loading,
+            /// <summary>
+            /// 播放中状态。
+            /// </summary>
             Playing,
+            /// <summary>
+            /// 渐渐消失状态。
+            /// </summary>
             FadingOut,
+            /// <summary>
+            /// 结束状态。
+            /// </summary>
             End,
         };
 
-        State _state = State.None;
+        /// <summary>
+        /// 音频代理辅助器运行时状态。
+        /// </summary>
+        RuntimeState _runtimeState = RuntimeState.None;
 
+        /// <summary>
+        /// 音频代理加载请求。
+        /// </summary>
         class LoadRequest
         {
-            public string path;
-            public bool bAsync;
+            public string Path;
+            public bool BAsync;
         }
 
+        /// <summary>
+        /// 音频代理加载请求。
+        /// </summary>
         LoadRequest _pendingLoad = null;
 
+        /// <summary>
+        /// AudioSource实例化Id
+        /// </summary>
         public int ID => _id;
 
+        /// <summary>
+        /// 资源操作句柄。
+        /// </summary>
+        public AssetOperationHandle assetOperationHandle => _assetOperationHandle;
+
+        /// <summary>
+        /// 音频代理辅助器音频大小。
+        /// </summary>
         public float Volume
         {
             set
@@ -54,13 +92,16 @@ namespace TEngine
             get => _volume;
         }
 
-        public bool IsFinish
+        /// <summary>
+        /// 音频代理辅助器当前是否空闲。
+        /// </summary>
+        public bool IsFree
         {
             get
             {
                 if (_source != null)
                 {
-                    return _state == State.End;
+                    return _runtimeState == RuntimeState.End;
                 }
                 else
                 {
@@ -69,8 +110,14 @@ namespace TEngine
             }
         }
 
+        /// <summary>
+        /// 音频代理辅助器播放秒数。
+        /// </summary>
         public float Duration => _duration;
 
+        /// <summary>
+        /// 音频代理辅助器当前音频长度。
+        /// </summary>
         public float Length
         {
             get
@@ -84,12 +131,18 @@ namespace TEngine
             }
         }
 
+        /// <summary>
+        /// 音频代理辅助器实例位置。
+        /// </summary>
         public Vector3 Position
         {
             get => _transform.position;
             set => _transform.position = value;
         }
 
+        /// <summary>
+        /// 音频代理辅助器是否循环。
+        /// </summary>
         public bool IsLoop
         {
             get
@@ -112,6 +165,9 @@ namespace TEngine
             }
         }
 
+        /// <summary>
+        /// 音频代理辅助器是否正在播放。
+        /// </summary>
         internal bool IsPlaying
         {
             get
@@ -127,11 +183,23 @@ namespace TEngine
             }
         }
 
+        /// <summary>
+        /// 音频代理辅助器获取当前声源。
+        /// </summary>
+        /// <returns></returns>
         public AudioSource AudioResource()
         {
             return _source;
         }
 
+        /// <summary>
+        /// 创建音频代理辅助器。
+        /// </summary>
+        /// <param name="path">生效路径。</param>
+        /// <param name="bAsync">是否异步。</param>
+        /// <param name="audioCategory">音频轨道（类别）。</param>
+        /// <param name="bInPool">是否池化。</param>
+        /// <returns>音频代理辅助器。</returns>
         public static AudioAgent Create(string path, bool bAsync, AudioCategory audioCategory, bool bInPool = false)
         {
             AudioAgent audioAgent = new AudioAgent();
@@ -140,9 +208,14 @@ namespace TEngine
             return audioAgent;
         }
 
+        /// <summary>
+        /// 初始化音频代理辅助器。
+        /// </summary>
+        /// <param name="audioCategory">音频轨道（类别）。</param>
+        /// <param name="index">音频代理辅助器编号。</param>
         public void Init(AudioCategory audioCategory,int index = 0)
         {
-            _audioModule = GameEntry.GetModule<AudioModule>();
+            _audioModule = GameModule.Audio;
             GameObject host = new GameObject(Utility.Text.Format("Audio Agent Helper - {0} - {1}", audioCategory.AudioMixerGroup.name, index));
             host.transform.SetParent(audioCategory.InstanceRoot);
             host.transform.localPosition = Vector3.zero;
@@ -151,13 +224,22 @@ namespace TEngine
             _source.playOnAwake = false;
             AudioMixerGroup[] audioMixerGroups = audioCategory.AudioMixer.FindMatchingGroups(Utility.Text.Format("Master/{0}/{1}", audioCategory.AudioMixerGroup.name, index));
             _source.outputAudioMixerGroup = audioMixerGroups.Length > 0 ? audioMixerGroups[0] : audioCategory.AudioMixerGroup;
+            _source.rolloffMode = audioCategory.AudioGroupConfig.audioRolloffMode;
+            _source.minDistance = audioCategory.AudioGroupConfig.minDistance;
+            _source.maxDistance = audioCategory.AudioGroupConfig.maxDistance;
             _id = _source.GetInstanceID();
         }
 
+        /// <summary>
+        /// 加载音频代理辅助器。
+        /// </summary>
+        /// <param name="path">资源路径。</param>
+        /// <param name="bAsync">是否异步。</param>
+        /// <param name="bInPool">是否池化。</param>
         public void Load(string path, bool bAsync, bool bInPool = false)
         {
             _inPool = bInPool;
-            if (_state == State.None || _state == State.End)
+            if (_runtimeState == RuntimeState.None || _runtimeState == RuntimeState.End)
             {
                 _duration = 0;
                 if (!string.IsNullOrEmpty(path))
@@ -170,7 +252,7 @@ namespace TEngine
 
                     if (bAsync)
                     {
-                        _state = State.Loading;
+                        _runtimeState = RuntimeState.Loading;
                         AssetOperationHandle handle = _audioModule.ResourceManager.LoadAssetAsyncHandle<AudioClip>(path);
                         handle.Completed += OnAssetLoadComplete;
                     }
@@ -183,15 +265,19 @@ namespace TEngine
             }
             else
             {
-                _pendingLoad = new LoadRequest { path = path, bAsync = bAsync };
+                _pendingLoad = new LoadRequest { Path = path, BAsync = bAsync };
 
-                if (_state == State.Playing)
+                if (_runtimeState == RuntimeState.Playing)
                 {
                     Stop(true);
                 }
             }
         }
 
+        /// <summary>
+        /// 暂停音频代理辅助器。
+        /// </summary>
+        /// <param name="fadeout">是否渐出。</param>
         public void Stop(bool fadeout = false)
         {
             if (_source != null)
@@ -199,16 +285,20 @@ namespace TEngine
                 if (fadeout)
                 {
                     _fadeoutTimer = FadeoutDuration;
-                    _state = State.FadingOut;
+                    _runtimeState = RuntimeState.FadingOut;
                 }
                 else
                 {
                     _source.Stop();
-                    _state = State.End;
+                    _runtimeState = RuntimeState.End;
                 }
             }
         }
 
+        /// <summary>
+        /// 资源加载完成。
+        /// </summary>
+        /// <param name="handle">资源操作句柄。</param>
         void OnAssetLoadComplete(AssetOperationHandle handle)
         {
             if (handle != null)
@@ -220,7 +310,6 @@ namespace TEngine
                 }
             }
 
-
             if (_pendingLoad != null)
             {
                 if (handle != null)
@@ -228,46 +317,52 @@ namespace TEngine
                     handle.Dispose();
                 }
 
-                _state = State.End;
-                string path = _pendingLoad.path;
-                bool bAsync = _pendingLoad.bAsync;
+                _runtimeState = RuntimeState.End;
+                string path = _pendingLoad.Path;
+                bool bAsync = _pendingLoad.BAsync;
                 _pendingLoad = null;
                 Load(path, bAsync);
             }
             else if (handle != null)
             {
-                if (assetOperationHandle != null)
+                if (_assetOperationHandle != null)
                 {
-                    assetOperationHandle.Dispose();
+                    _assetOperationHandle.Dispose();
                 }
 
-                assetOperationHandle = handle;
+                _assetOperationHandle = handle;
 
-                _source.clip = assetOperationHandle.AssetObject as AudioClip;
+                _source.clip = _assetOperationHandle.AssetObject as AudioClip;
                 if (_source.clip != null)
                 {
                     _source.Play();
-                    _state = State.Playing;
+                    _runtimeState = RuntimeState.Playing;
                 }
                 else
                 {
-                    _state = State.End;
+                    _runtimeState = RuntimeState.End;
                 }
             }
             else
             {
-                _state = State.End;
+                _runtimeState = RuntimeState.End;
             }
         }
 
+        /// <summary>
+        /// 轮询音频代理辅助器。
+        /// </summary>
+        /// <param name="delta"></param>
         public void Update(float delta)
         {
-            if (_state == State.Playing)
+            if (_runtimeState == RuntimeState.Playing)
             {
                 if (!_source.isPlaying)
-                    _state = State.End;
+                {
+                    _runtimeState = RuntimeState.End;
+                }
             }
-            else if (_state == State.FadingOut)
+            else if (_runtimeState == RuntimeState.FadingOut)
             {
                 if (_fadeoutTimer > 0f)
                 {
@@ -279,8 +374,8 @@ namespace TEngine
                     Stop();
                     if (_pendingLoad != null)
                     {
-                        string path = _pendingLoad.path;
-                        bool bAsync = _pendingLoad.bAsync;
+                        string path = _pendingLoad.Path;
+                        bool bAsync = _pendingLoad.BAsync;
                         _pendingLoad = null;
                         Load(path, bAsync);
                     }
@@ -288,10 +383,12 @@ namespace TEngine
                     _source.volume = _volume;
                 }
             }
-
             _duration += delta;
         }
 
+        /// <summary>
+        /// 销毁音频代理辅助器。
+        /// </summary>
         public void Destroy()
         {
             if (_transform != null)
@@ -299,9 +396,9 @@ namespace TEngine
                 Object.Destroy(_transform.gameObject);
             }
 
-            if (assetOperationHandle != null)
+            if (_assetOperationHandle != null)
             {
-                assetOperationHandle.Dispose();
+                _assetOperationHandle.Dispose();
             }
         }
     }
diff --git a/Assets/TEngine/Runtime/GameFramework/Audio/AudioCategory.cs b/Assets/TEngine/Runtime/GameFramework/Audio/AudioCategory.cs
index 24785aeb..d8d1e1cf 100644
--- a/Assets/TEngine/Runtime/GameFramework/Audio/AudioCategory.cs
+++ b/Assets/TEngine/Runtime/GameFramework/Audio/AudioCategory.cs
@@ -15,13 +15,33 @@ namespace TEngine
         private AudioMixer _audioMixer = null;
         public List<AudioAgent> AudioAgents;
         private readonly AudioMixerGroup _audioMixerGroup;
+        private AudioGroupConfig _audioGroupConfig;
         private int _maxChannel;
         private bool _bEnable = true;
+        
+        /// <summary>
+        /// 音频混响器。
+        /// </summary>
         public AudioMixer AudioMixer => _audioMixer;
+        
+        /// <summary>
+        /// 音频混响器组。
+        /// </summary>
         public AudioMixerGroup AudioMixerGroup => _audioMixerGroup;
 
+        /// <summary>
+        /// 音频组配置。
+        /// </summary>
+        public AudioGroupConfig AudioGroupConfig => _audioGroupConfig;
+
+        /// <summary>
+        /// 实例化根节点。
+        /// </summary>
         public Transform InstanceRoot { private set; get; }
 
+        /// <summary>
+        /// 音频轨道是否启用。
+        /// </summary>
         public bool Enable
         {
             get => _bEnable;
@@ -44,12 +64,18 @@ namespace TEngine
             }
         }
 
-
-        public AudioCategory(int maxChannel, AudioMixer audioMixer,AudioType audioType)
+        /// <summary>
+        /// 音频轨道构造函数。
+        /// </summary>
+        /// <param name="maxChannel">最大Channel。</param>
+        /// <param name="audioMixer">音频混响器。</param>
+        /// <param name="audioGroupConfig">音频轨道组配置。</param>
+        public AudioCategory(int maxChannel, AudioMixer audioMixer,AudioGroupConfig audioGroupConfig)
         {
             _audioMixer = audioMixer;
             _maxChannel = maxChannel;
-            AudioMixerGroup[] audioMixerGroups = audioMixer.FindMatchingGroups(Utility.Text.Format("Master/{0}", audioType.ToString()));
+            _audioGroupConfig = audioGroupConfig;
+            AudioMixerGroup[] audioMixerGroups = audioMixer.FindMatchingGroups(Utility.Text.Format("Master/{0}", audioGroupConfig.AudioType.ToString()));
             if (audioMixerGroups.Length > 0)
             {
                 _audioMixerGroup = audioMixerGroups[0];
@@ -69,6 +95,10 @@ namespace TEngine
             }
         }
 
+        /// <summary>
+        /// 增加音频。
+        /// </summary>
+        /// <param name="num"></param>
         public void AddAudio(int num)
         {
             _maxChannel += num;
@@ -78,7 +108,13 @@ namespace TEngine
             }
         }
 
-
+        /// <summary>
+        /// 播放音频。
+        /// </summary>
+        /// <param name="path"></param>
+        /// <param name="bAsync"></param>
+        /// <param name="bInPool"></param>
+        /// <returns></returns>
         public AudioAgent Play(string path, bool bAsync, bool bInPool = false)
         {
             if (!_bEnable)
@@ -91,7 +127,7 @@ namespace TEngine
 
             for (int i = 0; i < AudioAgents.Count; i++)
             {
-                if (AudioAgents[i].assetOperationHandle == null || AudioAgents[i].IsFinish)
+                if (AudioAgents[i].assetOperationHandle == null || AudioAgents[i].IsFree)
                 {
                     freeChannel = i;
                     break;
@@ -123,6 +159,10 @@ namespace TEngine
             }
         }
 
+        /// <summary>
+        /// 暂停音频。
+        /// </summary>
+        /// <param name="fadeout">是否渐出</param>
         public void Stop(bool fadeout)
         {
             for (int i = 0; i < AudioAgents.Count; ++i)
@@ -134,6 +174,10 @@ namespace TEngine
             }
         }
 
+        /// <summary>
+        /// 音频轨道轮询。
+        /// </summary>
+        /// <param name="delta"></param>
         public void Update(float delta)
         {
             for (int i = 0; i < AudioAgents.Count; ++i)
diff --git a/Assets/TEngine/Runtime/GameFramework/Audio/AudioGroupConfig.cs b/Assets/TEngine/Runtime/GameFramework/Audio/AudioGroupConfig.cs
index 190f219a..ed19e93a 100644
--- a/Assets/TEngine/Runtime/GameFramework/Audio/AudioGroupConfig.cs
+++ b/Assets/TEngine/Runtime/GameFramework/Audio/AudioGroupConfig.cs
@@ -3,6 +3,9 @@ using UnityEngine;
 
 namespace TEngine
 {
+    /// <summary>
+    /// 音频轨道组配置。
+    /// </summary>
     [Serializable]
     public sealed class AudioGroupConfig
     {
@@ -20,6 +23,12 @@ namespace TEngine
 
         public AudioType AudioType;
 
+        public AudioRolloffMode audioRolloffMode = AudioRolloffMode.Logarithmic;
+
+        public float minDistance = 1f;
+        
+        public float maxDistance = 500f;
+        
         public string Name
         {
             get
diff --git a/Assets/TEngine/Runtime/GameFramework/Audio/AudioModule.cs b/Assets/TEngine/Runtime/GameFramework/Audio/AudioModule.cs
index 603e3275..510aac4c 100644
--- a/Assets/TEngine/Runtime/GameFramework/Audio/AudioModule.cs
+++ b/Assets/TEngine/Runtime/GameFramework/Audio/AudioModule.cs
@@ -23,15 +23,10 @@ namespace TEngine
         
         private float _volume = 1f;
         private bool _enable = true;
-        private int _audioChannelMaxNum = 0;
         private AudioCategory[] _audioCategories = new AudioCategory[(int)AudioType.Max];
         private readonly float[] _categoriesVolume = new float[(int)AudioType.Max];
         public readonly Dictionary<string, AssetOperationHandle> AudioClipPool = new Dictionary<string, AssetOperationHandle>();
         public IResourceManager ResourceManager;
-
-        /// <summary>
-        /// Unity是否禁用音频模块。
-        /// </summary>
         private bool _bUnityAudioDisabled = false;
 
         #region Public Propreties
@@ -374,7 +369,7 @@ namespace TEngine
             {
                 AudioType audioType = (AudioType)index;
                 AudioGroupConfig audioGroupConfig = m_AudioGroupConfigs.First(t => t.AudioType == audioType);
-                _audioCategories[index] = new AudioCategory(audioGroupConfig.AgentHelperCount, m_AudioMixer, audioType);
+                _audioCategories[index] = new AudioCategory(audioGroupConfig.AgentHelperCount, m_AudioMixer, audioGroupConfig);
                 _categoriesVolume[index] = audioGroupConfig.Volume;
             }
         }
@@ -473,35 +468,7 @@ namespace TEngine
                 }
             }
         }
-
-
-        /// <summary>
-        /// 修改最大的音效播放上限，
-        /// </summary>
-        /// <param name="num"></param> 最大播放数量
-        public void ChangeAudioChannelMaxNum(int num)
-        {
-            if (_bUnityAudioDisabled)
-            {
-                return;
-            }
-
-            if (num >= _audioChannelMaxNum)
-            {
-                _audioCategories[(int)AudioType.Sound].AddAudio(num - _audioChannelMaxNum);
-                _audioChannelMaxNum = num;
-            }
-            else
-            {
-                Stop(AudioType.Sound, true);
-                _audioChannelMaxNum = num;
-                _audioCategories[(int)AudioType.Sound].Enable = false;
-                _audioCategories[(int)AudioType.Sound] = new AudioCategory(_audioChannelMaxNum, m_AudioMixer, AudioType.Sound);
-                _categoriesVolume[(int)AudioType.Sound] = 1.0f;
-            }
-        }
-
-
+        
         /// <summary>
         /// 预先加载AudioClip，并放入对象池。
         /// </summary>
@@ -562,6 +529,9 @@ namespace TEngine
             AudioClipPool.Clear();
         }
 
+        /// <summary>
+        /// 音频模块轮询。
+        /// </summary>
         private void Update()
         {
             for (int i = 0; i < _audioCategories.Length; ++i)