Due to the increasing demand of customer in variation and personalization of products, static, textual and 2D display of products are no longer satisfactory for presenting products on the Internet, especially for 3D digital products such as household electrical appliances, industrial equipments and medical instruments. This paper aimed at the problems of network customization system based mainly on the traditional static display form of e-commerce module, and put forward to a new Web3D technology-Cult3D, which advantages in contrast to VRML, a new e-commerce based appliance 3D digital customize system is developed, it can be used to realize the dynamic display and interactive custom conveniently. The research focused on some important problems such as system architecture, the creation of 3D models and system integration. The application was proved that could help improve the effect of info transfer and customer satisfactory degree, provide a new interactive design mode for the development of new product.