diff --git a/Assets/UniGLTF/Runtime/UniGLTF/IO/MeshIO/SkinningInfo.cs b/Assets/UniGLTF/Runtime/UniGLTF/IO/MeshIO/SkinningInfo.cs
index 33fae084a..d51054a0c 100644
--- a/Assets/UniGLTF/Runtime/UniGLTF/IO/MeshIO/SkinningInfo.cs
+++ b/Assets/UniGLTF/Runtime/UniGLTF/IO/MeshIO/SkinningInfo.cs
@@ -4,15 +4,53 @@ namespace UniGLTF
     {
         public JointsAccessor.Getter Joints;
         public WeightsAccessor.Getter Weights;
+        public bool AssignBoneWeight { get; private set; }
 
         public static SkinningInfo Create(GltfData data, glTFMesh mesh, glTFPrimitives primitives)
         {
+            // var hasMorphTarget = HasMorphTarget(mesh);
+            var hasMorphTarget = false;
+
             var positions = data.GLTF.accessors[primitives.attributes.POSITION];
-            return new SkinningInfo
+            var skinning = new SkinningInfo
             {
                 Joints = primitives.GetJoints(data, positions.count),
                 Weights = primitives.GetWeights(data, positions.count),
             };
+
+            if (skinning.Joints != null)
+            {
+                // use SkinnedMeshRenderer
+                return skinning;
+            }
+            else if (!hasMorphTarget)
+            {
+                // use MeshRenderer
+                return skinning;
+            }
+            else
+            {
+                // use SkinnedMeshRenderer without boneWeight.
+                // https://github.com/vrm-c/UniVRM/issues/1675                
+                return new SkinningInfo
+                {
+                    AssignBoneWeight = true,
+                    Joints = _ => (0, 0, 0, 0),
+                    Weights = _ => (1, 0, 0, 0), // assign weight 1
+                };
+            }
+        }
+
+        static bool HasMorphTarget(glTFMesh mesh)
+        {
+            foreach (var prim in mesh.primitives)
+            {
+                if (prim.targets != null && prim.targets.Count > 0)
+                {
+                    return true;
+                }
+            }
+            return false;
         }
 
         private static (float x, float y, float z, float w) NormalizeBoneWeight(