According to the existing agricultural product sales mode and resources in the local rural areas, this paper studies the existing agricultural product sales mode, and puts forward some suggestions for selecting the appropriate agricultural product sales mode and formulating the agricultural product sales strategy based on the service design process and research methods. This paper uses the stakeholder relationship diagram of service design theory to clarify the role of various enterprises in the process of agricultural products sales; uses the user journey diagram to explore the pain and opportunity points in the process of agricultural products sales; uses SWOT analysis method to analyze the local agricultural products sales environment to find the advantages and disadvantages in the local agricultural products sales environment; uses the service system diagram and its blueprint to show the optimization of agricultural products marketing strategy with the intervention of service design.Furthermore, based on the research process of service design, through the service design practice of agricultural product sales in Daping village, Tujia Township, Longquan, Sichuan Province, the optimization strategy of agricultural product sales mode suitable for the agricultural economic development of Daping village was formulated, and the development direction of agricultural product sales mode was proposed.Through the research of agricultural products sales mode based on service design thinking, the service design process is constructed to guide the formulation of rural agricultural products sales strategy, solve the problems of existing agricultural products sales mode, such as chaotic sales channels, large fluctuation of agricultural products sales price, slow response to the development of sales mode in rural areas and so on. More importantly, the research can guide farmers to accept new sales mode, promote the development of agricultural economy in rural areas, which is helpful to solve the "three rural" problems (issues relating to agriculture, rural areas, and rural people) and promote the implementation of rural revitalization strategy.