Abstract: Based on the theory of complex adaptive system (CAS), the basic principles of biomass was regarded as circular agriculture operation mode the adaptability of the complex adaptive system is the main body, each other constantly in ecological, technical and economic exchange, on this basis, through in-depth analysis of ecological flow, technology flow and the flow characteristics of flow in the circulation of agricultural economic growth mode as well as the three links, circular agriculture operation mode is established under the operation mechanism of ecological, technical and economic benefits of biomass model, and through the example analysis, using the interpretation structure model (ISM) to be added, so as to promote the efficient operation of biomass utilization in circular agriculture operation mode