diff --git a/Obfuz/Packages/com.code-philosophy.obfuz/Editor/ObfusPasses/SymbolObfus/IObfuscationPolicy.cs b/Obfuz/Packages/com.code-philosophy.obfuz/Editor/ObfusPasses/SymbolObfus/IObfuscationPolicy.cs
index 34f9e99..2a39e45 100644
--- a/Obfuz/Packages/com.code-philosophy.obfuz/Editor/ObfusPasses/SymbolObfus/IObfuscationPolicy.cs
+++ b/Obfuz/Packages/com.code-philosophy.obfuz/Editor/ObfusPasses/SymbolObfus/IObfuscationPolicy.cs
@@ -13,7 +13,5 @@ namespace Obfuz.ObfusPasses.SymbolObfus
         bool NeedRename(PropertyDef propertyDef);
 
         bool NeedRename(EventDef eventDef);
-
-        bool NeedRename(ParamDef paramDef);
     }
 }
diff --git a/Obfuz/Packages/com.code-philosophy.obfuz/Editor/ObfusPasses/SymbolObfus/Policies/CacheRenamePolicy.cs b/Obfuz/Packages/com.code-philosophy.obfuz/Editor/ObfusPasses/SymbolObfus/Policies/CacheRenamePolicy.cs
index 937ff66..ba6e9c6 100644
--- a/Obfuz/Packages/com.code-philosophy.obfuz/Editor/ObfusPasses/SymbolObfus/Policies/CacheRenamePolicy.cs
+++ b/Obfuz/Packages/com.code-philosophy.obfuz/Editor/ObfusPasses/SymbolObfus/Policies/CacheRenamePolicy.cs
@@ -64,15 +64,5 @@ namespace Obfuz.ObfusPasses.SymbolObfus.Policies
             }
             return value;
         }
-
-        public override bool NeedRename(ParamDef paramDef)
-        {
-            if (!_computeCache.TryGetValue(paramDef, out var value))
-            {
-                value = _underlyingPolicy.NeedRename(paramDef);
-                _computeCache[paramDef] = value;
-            }
-            return value;
-        }
     }
 }
diff --git a/Obfuz/Packages/com.code-philosophy.obfuz/Editor/ObfusPasses/SymbolObfus/Policies/CombineRenamePolicy.cs b/Obfuz/Packages/com.code-philosophy.obfuz/Editor/ObfusPasses/SymbolObfus/Policies/CombineRenamePolicy.cs
index 53ca0c9..a84a587 100644
--- a/Obfuz/Packages/com.code-philosophy.obfuz/Editor/ObfusPasses/SymbolObfus/Policies/CombineRenamePolicy.cs
+++ b/Obfuz/Packages/com.code-philosophy.obfuz/Editor/ObfusPasses/SymbolObfus/Policies/CombineRenamePolicy.cs
@@ -36,10 +36,5 @@ namespace Obfuz.ObfusPasses.SymbolObfus.Policies
         {
             return _policies.All(policy => policy.NeedRename(eventDef));
         }
-
-        public bool NeedRename(ParamDef paramDef)
-        {
-            return _policies.All(policy => policy.NeedRename(paramDef));
-        }
     }
 }
diff --git a/Obfuz/Packages/com.code-philosophy.obfuz/Editor/ObfusPasses/SymbolObfus/Policies/ConfigurableRenamePolicy.cs b/Obfuz/Packages/com.code-philosophy.obfuz/Editor/ObfusPasses/SymbolObfus/Policies/ConfigurableRenamePolicy.cs
index 101f0db..71e42b5 100644
--- a/Obfuz/Packages/com.code-philosophy.obfuz/Editor/ObfusPasses/SymbolObfus/Policies/ConfigurableRenamePolicy.cs
+++ b/Obfuz/Packages/com.code-philosophy.obfuz/Editor/ObfusPasses/SymbolObfus/Policies/ConfigurableRenamePolicy.cs
@@ -65,8 +65,6 @@ namespace Obfuz.ObfusPasses.SymbolObfus.Policies
         {
             public string ruleName;
             public bool obfuscateName;
-            public bool obfuscateParam;
-            public bool obfuscateBody;
         }
 
         class FieldRuleSpec
@@ -166,8 +164,6 @@ namespace Obfuz.ObfusPasses.SymbolObfus.Policies
         {
             ruleName = "none",
             obfuscateName = false,
-            obfuscateParam = false,
-            obfuscateBody = false,
         };
 
         private static readonly EventRule s_noneEventRule = new EventRule
@@ -401,8 +397,6 @@ namespace Obfuz.ObfusPasses.SymbolObfus.Policies
             var rule = new MethodRule();
             rule.ruleName = ruleName;
             rule.obfuscateName = ParseBoolNoneOrFalse(element.GetAttribute("ob-name"));
-            rule.obfuscateParam = ParseBoolNoneOrFalse(element.GetAttribute("ob-param"));
-            rule.obfuscateBody = ParseBoolNoneOrFalse(element.GetAttribute("ob-body"));
             return rule;
         }
 
@@ -818,8 +812,6 @@ namespace Obfuz.ObfusPasses.SymbolObfus.Policies
                         }
                         MethodRule methodRule = e.Item2.rule;
                         methodCache.obfuscateName &= methodRule.obfuscateName;
-                        methodCache.obfuscateParam &= methodRule.obfuscateParam;
-                        methodCache.obfuscateBody &= methodRule.obfuscateBody;
                     }
                     foreach (MethodRuleSpec methodSpec in totalMethodSpecs)
                     {
@@ -834,8 +826,6 @@ namespace Obfuz.ObfusPasses.SymbolObfus.Policies
                         }
                         MethodRule methodRule = methodSpec.rule;
                         methodCache.obfuscateName &= methodRule.obfuscateName;
-                        methodCache.obfuscateParam &= methodRule.obfuscateParam;
-                        methodCache.obfuscateBody &= methodRule.obfuscateBody;
                     }
                 }
             }
@@ -879,17 +869,5 @@ namespace Obfuz.ObfusPasses.SymbolObfus.Policies
             TypeDefComputeCache cache = GetOrCreateTypeDefRenameComputeCache(typeDef);
             return !cache.notObfuscatedEvents.Contains(eventDef);
         }
-
-        public override bool NeedRename(ParamDef paramDef)
-        {
-            MethodDef methodDef = paramDef.DeclaringMethod;
-            TypeDef typeDef = methodDef.DeclaringType;
-            TypeDefComputeCache cache = GetOrCreateTypeDefRenameComputeCache(typeDef);
-            if (!cache.methods.TryGetValue(methodDef, out var methodCache))
-            {
-                return true;
-            }
-            return methodCache.obfuscateParam;
-        }
     }
 }
diff --git a/Obfuz/Packages/com.code-philosophy.obfuz/Editor/ObfusPasses/SymbolObfus/Policies/ObfuscationPolicyBase.cs b/Obfuz/Packages/com.code-philosophy.obfuz/Editor/ObfusPasses/SymbolObfus/Policies/ObfuscationPolicyBase.cs
index 96cfcce..6a271ad 100644
--- a/Obfuz/Packages/com.code-philosophy.obfuz/Editor/ObfusPasses/SymbolObfus/Policies/ObfuscationPolicyBase.cs
+++ b/Obfuz/Packages/com.code-philosophy.obfuz/Editor/ObfusPasses/SymbolObfus/Policies/ObfuscationPolicyBase.cs
@@ -29,10 +29,5 @@ namespace Obfuz.ObfusPasses.SymbolObfus.Policies
         {
             return true;
         }
-
-        public virtual bool NeedRename(ParamDef paramDef)
-        {
-            return true;
-        }
     }
 }
diff --git a/Obfuz/Packages/com.code-philosophy.obfuz/Editor/ObfusPasses/SymbolObfus/SymbolRename.cs b/Obfuz/Packages/com.code-philosophy.obfuz/Editor/ObfusPasses/SymbolObfus/SymbolRename.cs
index 64c8e0e..6e9997e 100644
--- a/Obfuz/Packages/com.code-philosophy.obfuz/Editor/ObfusPasses/SymbolObfus/SymbolRename.cs
+++ b/Obfuz/Packages/com.code-philosophy.obfuz/Editor/ObfusPasses/SymbolObfus/SymbolRename.cs
@@ -716,12 +716,9 @@ namespace Obfuz.ObfusPasses.SymbolObfus
 
         private void Rename(ParamDef param)
         {
-            if (_renamePolicy.NeedRename(param))
-            {
-                string newName = _nameMaker.GetNewName(param, param.Name);
-                _renameRecordMap.AddRename(param, newName);
-                param.Name = newName;
-            }
+            string newName = _nameMaker.GetNewName(param, param.Name);
+            _renameRecordMap.AddRename(param, newName);
+            param.Name = newName;
         }
 
         private void Rename(EventDef eventDef)