The lamp is thickened to change the size to increase the flow evenly to avoid the shrinkage. The conformal cooling is better than the traditional cooling effect of PA6 C218 V15 and magnesium alloy. The conformal cooling type is cooled with the surface of the lamp housing. It is considered for MIM_Catamold_316_LA and PA6_C218_V15 in Moldex3D. Different materials are used for differential analysis because the weight of the material is used to consider the influence of the lamp shell on the front end, and the thickness of the ribless lamp housing is increased to improve the flow