Pushed by China's rural revitalization, agricultural e-commerce is developing rapidly. However, there are some problems in the application such as short supply chain, insufficient information integration, and little real benefits for small farmers. On the basis of systematically analyzing the environment and current situation of e-commerce in the trade of fresh agricultural products and using the theory of supply chain dynamic alliance, this paper proposes a process of P2C (Producers To Consumers) e-commerce mode in the trade of fresh agricultural products based on integrated platform to optimize the overall benefits of the P2 Csupply chain, thereby improving the organization and management production and distribution of fresh e-commerce, together with countermeasures for cultivating P2C e-commercesy stem. The combination of mature e-commerce technology and agricultural industry is the key to the success of agricultural e-commerce. It is of great theoretical value and application value to study the P2C e-commerce mode of fresh agricultural products based on supply chain dynamic alliance.