diff --git a/Assets/VRM10/Runtime/Components/Expression/Preview/PreviewMaterialUtil.cs b/Assets/VRM10/Runtime/Components/Expression/Preview/PreviewMaterialUtil.cs
new file mode 100644
index 0000000000..cbec604acf
--- /dev/null
+++ b/Assets/VRM10/Runtime/Components/Expression/Preview/PreviewMaterialUtil.cs
@@ -0,0 +1,47 @@
+using System;
+using System.Collections.Generic;
+using UnityEngine;
+
+#if UNITY_EDITOR
+using UnityEditor;
+
+namespace UniVRM10
+{
+    public static class PreviewMaterialUtil
+    {
+        public static PreviewMaterialItem CreateForPreview(Material material)
+        {
+            var item = new PreviewMaterialItem(material);
+
+            var propNames = new List<string>();
+            for (int i = 0; i < ShaderUtil.GetPropertyCount(material.shader); ++i)
+            {
+                var propType = ShaderUtil.GetPropertyType(material.shader, i);
+                var name = ShaderUtil.GetPropertyName(material.shader, i);
+
+                switch (propType)
+                {
+                    case ShaderUtil.ShaderPropertyType.Color:
+                        // 色
+                        {
+                            var bindType = PreviewMaterialItem.GetBindType(name);
+                            item.PropMap.Add(bindType, new PropItem
+                            {
+                                Name = name,
+                                PropertyType = (UniVRM10.ShaderPropertyType)Enum.Parse(typeof(UniVRM10.ShaderPropertyType), propType.ToString(), true),
+                                DefaultValues = material.GetColor(name),
+                            });
+                            propNames.Add(name);
+                        }
+                        break;
+
+                    case ShaderUtil.ShaderPropertyType.TexEnv:
+                        break;
+                }
+            }
+            item.PropNames = propNames.ToArray();
+            return item;
+        }
+    }
+}
+#endif
\ No newline at end of file
diff --git a/Assets/VRM10/Runtime/Components/Expression/Preview/PreviewMaterialUtil.cs.meta b/Assets/VRM10/Runtime/Components/Expression/Preview/PreviewMaterialUtil.cs.meta
new file mode 100644
index 0000000000..6127749023
--- /dev/null
+++ b/Assets/VRM10/Runtime/Components/Expression/Preview/PreviewMaterialUtil.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 45f9865ffd894b04bad0c39f53154f55
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/VRM10/Runtime/Components/Expression/Preview/PreviewSceneManager.cs b/Assets/VRM10/Runtime/Components/Expression/Preview/PreviewSceneManager.cs
index 3f93078f18..b2044cdb32 100644
--- a/Assets/VRM10/Runtime/Components/Expression/Preview/PreviewSceneManager.cs
+++ b/Assets/VRM10/Runtime/Components/Expression/Preview/PreviewSceneManager.cs
@@ -97,7 +97,7 @@ private void Initialize(GameObject prefab)
 
                     //Debug.LogFormat("add material {0}", src.name);
                     materialNames.Add(src.name);
-                    m_materialMap.Add(src.name, PreviewMaterialItem.CreateForPreview(dst));
+                    m_materialMap.Add(src.name, PreviewMaterialUtil.CreateForPreview(dst));
                 }
                 return dst;
             };
diff --git a/Assets/VRM10/Runtime/Components/Expression/PreviewMaterialItem.cs b/Assets/VRM10/Runtime/Components/Expression/PreviewMaterialItem.cs
index 1cecedf22d..07091b5f52 100644
--- a/Assets/VRM10/Runtime/Components/Expression/PreviewMaterialItem.cs
+++ b/Assets/VRM10/Runtime/Components/Expression/PreviewMaterialItem.cs
@@ -2,13 +2,10 @@
 using System.Collections.Generic;
 using UnityEngine;
 using UniGLTF.Extensions.VRMC_vrm;
-#if UNITY_EDITOR
-using UnityEditor;
-#endif
+
 
 namespace UniVRM10
 {
-
     public enum ShaderPropertyType
     {
         //
@@ -68,7 +65,7 @@ public PreviewMaterialItem(Material material)
         public string[] PropNames
         {
             get;
-            private set;
+            set;
         }
 
         public void RestoreInitialValues()
@@ -79,7 +76,6 @@ public void RestoreInitialValues()
             }
         }
 
-#if UNITY_EDITOR
         public const string UV_PROPERTY = "_MainTex_ST";
         public const string COLOR_PROPERTY = "_Color";
         public const string EMISSION_COLOR_PROPERTY = "_EmissionColor";
@@ -108,69 +104,5 @@ public static MaterialColorType GetBindType(string property)
 
             throw new NotImplementedException();
         }
-
-        public static PreviewMaterialItem CreateForPreview(Material material)
-        {
-            var item = new PreviewMaterialItem(material);
-
-            var propNames = new List<string>();
-            for (int i = 0; i < ShaderUtil.GetPropertyCount(material.shader); ++i)
-            {
-                var propType = ShaderUtil.GetPropertyType(material.shader, i);
-                var name = ShaderUtil.GetPropertyName(material.shader, i);
-
-                switch (propType)
-                {
-                    case ShaderUtil.ShaderPropertyType.Color:
-                        // 色
-                        {
-                            var bindType = GetBindType(name);
-                            item.PropMap.Add(bindType, new PropItem
-                            {
-                                Name = name,
-                                PropertyType = (UniVRM10.ShaderPropertyType)Enum.Parse(typeof(UniVRM10.ShaderPropertyType), propType.ToString(), true),
-                                DefaultValues = material.GetColor(name),
-                            });
-                            propNames.Add(name);
-                        }
-                        break;
-
-                    case ShaderUtil.ShaderPropertyType.TexEnv:
-                        // テクスチャ
-                        // {
-                        //     name += "_ST";
-                        //     item.PropMap.Add(name, new PropItem
-                        //     {
-                        //         PropertyType = propType,
-                        //         DefaultValues = material.GetVector(name),
-                        //     });
-                        //     propNames.Add(name);
-                        // }
-                        // // 縦横分離用
-                        // {
-                        //     var st_name = name + "_S";
-                        //     item.PropMap.Add(st_name, new PropItem
-                        //     {
-                        //         PropertyType = propType,
-                        //         DefaultValues = material.GetVector(name),
-                        //     });
-                        //     propNames.Add(st_name);
-                        // }
-                        // {
-                        //     var st_name = name + "_T";
-                        //     item.PropMap.Add(st_name, new PropItem
-                        //     {
-                        //         PropertyType = propType,
-                        //         DefaultValues = material.GetVector(name),
-                        //     });
-                        //     propNames.Add(st_name);
-                        // }
-                        break;
-                }
-            }
-            item.PropNames = propNames.ToArray();
-            return item;
-        }
-#endif
     }
 }