Service marketing is a powerful means for enterprises to enhance their competitiveness and attract customers. In recent years, the service consciousness is weak and the product homogenization is more prominent in service marketing, which seriously hinders the development of enterprises. With the development of Internet technology, WeChat public platform has been gradually applied by various industries, and has achieved good results. In this context, this paper studies the service marketing strategy based on WeChat public platform. First of all, the concept of service marketing is defined; secondly, the existing problems in service marketing in China are summarized, including the lack of service product innovation, weak service consciousness and so on; thirdly, the significance of WeChat public platform to promote the development of service marketing is analyzed; finally, on the basis of the above research, the service marketing strategy based on WeChat public platform is put forward.