diff --git a/Assets/YooAsset/Editor/AssetBundleBuilder/BuildPipeline/BaseTasks/TaskCreateManifest.cs b/Assets/YooAsset/Editor/AssetBundleBuilder/BuildPipeline/BaseTasks/TaskCreateManifest.cs
index 23120ef4..4c8af55e 100644
--- a/Assets/YooAsset/Editor/AssetBundleBuilder/BuildPipeline/BaseTasks/TaskCreateManifest.cs
+++ b/Assets/YooAsset/Editor/AssetBundleBuilder/BuildPipeline/BaseTasks/TaskCreateManifest.cs
@@ -180,9 +180,9 @@ namespace YooAsset.Editor
             for (int index = 0; index < manifest.BundleList.Count; index++)
             {
                 var packageBundle = manifest.BundleList[index];
-                if (_cacheBundleTags.ContainsKey(index))
+                if (_cacheBundleTags.TryGetValue(index, out var value))
                 {
-                    packageBundle.Tags = _cacheBundleTags[index].ToArray();
+                    packageBundle.Tags = value.ToArray();
                 }
                 else
                 {
diff --git a/Assets/YooAsset/Editor/AssetBundleBuilder/BuildPipeline/BaseTasks/TaskGetBuildMap.cs b/Assets/YooAsset/Editor/AssetBundleBuilder/BuildPipeline/BaseTasks/TaskGetBuildMap.cs
index 6e78c054..68be80dd 100644
--- a/Assets/YooAsset/Editor/AssetBundleBuilder/BuildPipeline/BaseTasks/TaskGetBuildMap.cs
+++ b/Assets/YooAsset/Editor/AssetBundleBuilder/BuildPipeline/BaseTasks/TaskGetBuildMap.cs
@@ -56,9 +56,9 @@ namespace YooAsset.Editor
                 string bundleName = collectAssetInfo.BundleName;
                 foreach (var dependAsset in collectAssetInfo.DependAssets)
                 {
-                    if (allBuildAssetInfos.ContainsKey(dependAsset.AssetPath))
+                    if (allBuildAssetInfos.TryGetValue(dependAsset.AssetPath, out var value))
                     {
-                        allBuildAssetInfos[dependAsset.AssetPath].AddReferenceBundleName(bundleName);
+                        value.AddReferenceBundleName(bundleName);
                     }
                     else
                     {
diff --git a/Assets/YooAsset/Editor/AssetBundleBuilder/BuildPipeline/RawFileBuildPipeline/BuildTasks/TaskCreateManifest_RFBP.cs b/Assets/YooAsset/Editor/AssetBundleBuilder/BuildPipeline/RawFileBuildPipeline/BuildTasks/TaskCreateManifest_RFBP.cs
index 4a7778af..816063a9 100644
--- a/Assets/YooAsset/Editor/AssetBundleBuilder/BuildPipeline/RawFileBuildPipeline/BuildTasks/TaskCreateManifest_RFBP.cs
+++ b/Assets/YooAsset/Editor/AssetBundleBuilder/BuildPipeline/RawFileBuildPipeline/BuildTasks/TaskCreateManifest_RFBP.cs
@@ -14,7 +14,7 @@ namespace YooAsset.Editor
 
         protected override string[] GetBundleDepends(BuildContext context, string bundleName)
         {
-            return new string[] { };
+            return Array.Empty<string>();
         }
     }
 }
\ No newline at end of file
diff --git a/Assets/YooAsset/Editor/AssetBundleCollector/AssetBundleCollectorSettingData.cs b/Assets/YooAsset/Editor/AssetBundleCollector/AssetBundleCollectorSettingData.cs
index c0c41a25..3f44c409 100644
--- a/Assets/YooAsset/Editor/AssetBundleCollector/AssetBundleCollectorSettingData.cs
+++ b/Assets/YooAsset/Editor/AssetBundleCollector/AssetBundleCollectorSettingData.cs
@@ -23,7 +23,7 @@ namespace YooAsset.Editor
 
         private static readonly Dictionary<string, System.Type> _cacheIgnoreRuleTypes = new Dictionary<string, System.Type>();
         private static readonly Dictionary<string, IIgnoreRule> _cacheIgnoreRuleInstance = new Dictionary<string, IIgnoreRule>();
-        
+
         /// <summary>
         /// 配置数据是否被修改
         /// </summary>
@@ -275,23 +275,23 @@ namespace YooAsset.Editor
 
         public static bool HasActiveRuleName(string ruleName)
         {
-            return _cacheActiveRuleTypes.Keys.Contains(ruleName);
+            return _cacheActiveRuleTypes.ContainsKey(ruleName);
         }
         public static bool HasAddressRuleName(string ruleName)
         {
-            return _cacheAddressRuleTypes.Keys.Contains(ruleName);
+            return _cacheAddressRuleTypes.ContainsKey(ruleName);
         }
         public static bool HasPackRuleName(string ruleName)
         {
-            return _cachePackRuleTypes.Keys.Contains(ruleName);
+            return _cachePackRuleTypes.ContainsKey(ruleName);
         }
         public static bool HasFilterRuleName(string ruleName)
         {
-            return _cacheFilterRuleTypes.Keys.Contains(ruleName);
+            return _cacheFilterRuleTypes.ContainsKey(ruleName);
         }
         public static bool HasIgnoreRuleName(string ruleName)
         {
-            return _cacheIgnoreRuleTypes.Keys.Contains(ruleName);
+            return _cacheIgnoreRuleTypes.ContainsKey(ruleName);
         }
 
         public static IActiveRule GetActiveRuleInstance(string ruleName)
diff --git a/Assets/YooAsset/Runtime/CacheSystem/CacheManager.cs b/Assets/YooAsset/Runtime/CacheSystem/CacheManager.cs
index 9b94fc28..45832a5c 100644
--- a/Assets/YooAsset/Runtime/CacheSystem/CacheManager.cs
+++ b/Assets/YooAsset/Runtime/CacheSystem/CacheManager.cs
@@ -94,10 +94,7 @@ namespace YooAsset
                 }
             }
 
-            if (_wrappers.ContainsKey(cacheGUID))
-            {
-                _wrappers.Remove(cacheGUID);
-            }
+            _wrappers.Remove(cacheGUID);
         }
 
         /// <summary>
diff --git a/Assets/YooAsset/Runtime/ResourceManager/Handle/AllAssetsHandle.cs b/Assets/YooAsset/Runtime/ResourceManager/Handle/AllAssetsHandle.cs
index abce66e5..7f5cb908 100644
--- a/Assets/YooAsset/Runtime/ResourceManager/Handle/AllAssetsHandle.cs
+++ b/Assets/YooAsset/Runtime/ResourceManager/Handle/AllAssetsHandle.cs
@@ -67,7 +67,7 @@ namespace YooAsset
         /// <summary>
         /// 子资源对象集合
         /// </summary>
-        public UnityEngine.Object[] AllAssetObjects
+        public IReadOnlyList<UnityEngine.Object> AllAssetObjects
         {
             get
             {
diff --git a/Assets/YooAsset/Runtime/ResourceManager/Handle/SubAssetsHandle.cs b/Assets/YooAsset/Runtime/ResourceManager/Handle/SubAssetsHandle.cs
index 48421a0f..c6e742a1 100644
--- a/Assets/YooAsset/Runtime/ResourceManager/Handle/SubAssetsHandle.cs
+++ b/Assets/YooAsset/Runtime/ResourceManager/Handle/SubAssetsHandle.cs
@@ -67,7 +67,7 @@ namespace YooAsset
         /// <summary>
         /// 子资源对象集合
         /// </summary>
-        public UnityEngine.Object[] AllAssetObjects
+        public IReadOnlyList<Object> AllAssetObjects
         {
             get
             {
diff --git a/Assets/YooAsset/Runtime/ResourcePackage/ManifestTools.cs b/Assets/YooAsset/Runtime/ResourcePackage/ManifestTools.cs
index 05f34659..20a14fde 100644
--- a/Assets/YooAsset/Runtime/ResourcePackage/ManifestTools.cs
+++ b/Assets/YooAsset/Runtime/ResourcePackage/ManifestTools.cs
@@ -166,10 +166,8 @@ namespace YooAsset
             {
                 // 注意：我们不允许原始路径存在重名
                 string assetPath = packageAsset.AssetPath;
-                if (manifest.AssetDic.ContainsKey(assetPath))
+                if (!manifest.AssetDic.TryAdd(assetPath, packageAsset))
                     throw new Exception($"AssetPath have existed : {assetPath}");
-                else
-                    manifest.AssetDic.Add(assetPath, packageAsset);
             }
 
             return manifest;
diff --git a/Assets/YooAsset/Runtime/ResourcePackage/Operation/Internal/DeserializeManifestOperation.cs b/Assets/YooAsset/Runtime/ResourcePackage/Operation/Internal/DeserializeManifestOperation.cs
index 77e088b7..101876ee 100644
--- a/Assets/YooAsset/Runtime/ResourcePackage/Operation/Internal/DeserializeManifestOperation.cs
+++ b/Assets/YooAsset/Runtime/ResourcePackage/Operation/Internal/DeserializeManifestOperation.cs
@@ -124,10 +124,8 @@ namespace YooAsset
 
                         // 注意：我们不允许原始路径存在重名
                         string assetPath = packageAsset.AssetPath;
-                        if (Manifest.AssetDic.ContainsKey(assetPath))
+                        if (!Manifest.AssetDic.TryAdd(assetPath, packageAsset))
                             throw new System.Exception($"AssetPath have existed : {assetPath}");
-                        else
-                            Manifest.AssetDic.Add(assetPath, packageAsset);
 
                         // 填充AssetPathMapping1
                         {
@@ -136,19 +134,15 @@ namespace YooAsset
                                 location = location.ToLower();
 
                             // 添加原生路径的映射
-                            if (Manifest.AssetPathMapping1.ContainsKey(location))
+                            if (!Manifest.AssetPathMapping1.TryAdd(location, packageAsset.AssetPath))
                                 throw new System.Exception($"Location have existed : {location}");
-                            else
-                                Manifest.AssetPathMapping1.Add(location, packageAsset.AssetPath);
 
                             // 添加无后缀名路径的映射
                             string locationWithoutExtension = Path.ChangeExtension(location, null);
                             if (ReferenceEquals(location, locationWithoutExtension) == false)
                             {
-                                if (Manifest.AssetPathMapping1.ContainsKey(locationWithoutExtension))
+                                if (!Manifest.AssetPathMapping1.TryAdd(locationWithoutExtension, packageAsset.AssetPath))
                                     YooLogger.Warning($"Location have existed : {locationWithoutExtension}");
-                                else
-                                    Manifest.AssetPathMapping1.Add(locationWithoutExtension, packageAsset.AssetPath);
                             }
                         }
                         if (Manifest.EnableAddressable)
@@ -156,20 +150,16 @@ namespace YooAsset
                             string location = packageAsset.Address;
                             if (string.IsNullOrEmpty(location) == false)
                             {
-                                if (Manifest.AssetPathMapping1.ContainsKey(location))
+                                if (!Manifest.AssetPathMapping1.TryAdd(location, packageAsset.AssetPath))
                                     throw new System.Exception($"Location have existed : {location}");
-                                else
-                                    Manifest.AssetPathMapping1.Add(location, packageAsset.AssetPath);
                             }
                         }
 
                         // 填充AssetPathMapping2
                         if (Manifest.IncludeAssetGUID)
                         {
-                            if (Manifest.AssetPathMapping2.ContainsKey(packageAsset.AssetGUID))
+                            if (!Manifest.AssetPathMapping2.TryAdd(packageAsset.AssetGUID, packageAsset.AssetPath))
                                 throw new System.Exception($"AssetGUID have existed : {packageAsset.AssetGUID}");
-                            else
-                                Manifest.AssetPathMapping2.Add(packageAsset.AssetGUID, packageAsset.AssetPath);
                         }
 
                         _packageAssetCount--;
diff --git a/Assets/YooAsset/Runtime/ResourcePackage/PackageManifest.cs b/Assets/YooAsset/Runtime/ResourcePackage/PackageManifest.cs
index 53a52fe7..9160c079 100644
--- a/Assets/YooAsset/Runtime/ResourcePackage/PackageManifest.cs
+++ b/Assets/YooAsset/Runtime/ResourcePackage/PackageManifest.cs
@@ -344,7 +344,7 @@ namespace YooAsset
             if (string.IsNullOrEmpty(location) == false)
             {
                 // 检查路径末尾是否有空格
-                int index = location.LastIndexOf(" ");
+                int index = location.LastIndexOf(' ');
                 if (index != -1)
                 {
                     if (location.Length == index + 1)
diff --git a/Assets/YooAsset/Runtime/Utility/YooUtility.cs b/Assets/YooAsset/Runtime/Utility/YooUtility.cs
index 8069b23b..80cb58b3 100644
--- a/Assets/YooAsset/Runtime/Utility/YooUtility.cs
+++ b/Assets/YooAsset/Runtime/Utility/YooUtility.cs
@@ -1,9 +1,7 @@
 using System;
-using System.Collections;
-using System.Collections.Generic;
-using System.Text;
 using System.IO;
 using System.Security.Cryptography;
+using System.Text;
 
 namespace YooAsset
 {
@@ -29,7 +27,7 @@ namespace YooAsset
             if (string.IsNullOrEmpty(str))
                 return str;
 
-            int index = str.LastIndexOf(".");
+            int index = str.LastIndexOf('.');
             if (index == -1)
                 return str;
             else