Abstract:The spread of sea rice (salt-tolerant rice) technology has great strategic significance for alleviating the trend of arable land area and grain yield in China. The spread of sea rice in the existing agricultural technology diffusion system has system instability and diffusion time lag. Based on the theory of synergy, this paper analyzes the diffusion system of sea rice technology. By adding the main body variable of agricultural enterprise and establishing the multi-agent co-diffusion model with its core as the core, it is found that the new diffusion system has stability and robustness.. Furthermore, by studying the dynamic mechanism of multi-agent co-proliferation, this paper proposes to construct a strategic driving force for the diffusion of sea rice technology innovation and a “two-wheel drive” model of market power in China, in order to solve the dynamic mechanism of sustainable rice diffusion in China as well formulate a policy for the diffusion of sea rice technology innovation.