Abstract: In order to study the economy of multi-stable ammonia synthesis process, this paper simulated the dynamic scheduling process of ammonia synthesis load based on the specific landscape resource conditions and plant scale in a certain area. When hydrogen is insufficient, in order to prevent the impact on the production of synthetic ammonia, the way of hydrogen production is used to make up the demand for hydrogen, and the influence of the limit of electricity purchase on the whole scheduling process is analyzed. Through the economic comparison between the multi-stable ammonia synthesis and the steady-state ammonia production, the multi-stable ammonia synthesis technology is more economical, and compared with a steady-state green ammonia production project in Inner Mongolia, it is found that the optimization of the green ammonia project in this paper is practical and effective.