With the development of China's service economy, service design has attracted increasing attention, and professional design institutions regard it as the direction of innovation. However, there is an obvious gap between the application of service design in industry and the academic research of service design. The service design is classified into the interaction/user experience design on micro-level, the inward functional design and outward organizational design on meso-level and the social transition design on macro-level, aimed at changing the environment in which service organizations are located. With the present situation of service design in China's agrifood system as an example, the development characteristics of service design at four levels in this specific field are analyzed.