In order to adapt to fast-changing consumer needs and minimize design and modeling work, this study employs theme matching method to discuss the theme matching model and sanitary ware product design and to take the specific case of shower design in order to create the software of 3-D shape design system for sanitary ware products based on theme matching model and computer-aided design as well. Production practice has shown that the system has successfully completed rapid industrialization and improved the efficiency of sanitary ware product design and development.