Abstract: Under the background of "carbon peaking and carbon neutrality",the development of coal-power green ammonia blending is becoming a new trend in energy transformation. Coal and power green ammonia blending is the use of wind power, solar power and other renewable energy surplus power electrolysis of water to produce green hydrogen and synthesised green ammonia, the implementation of coal-fired units blending power generation, replacing part of the coal-fired. Coal-power green ammonia blending can make up for the instability and intermittency of wind power, photovoltaic power generation, and make large-scale coal-power facilities can continue to use, in the process of transition to clean energy to ensure the safety and stable supply of electricity. However, the current coal power green ammonia blending industry costs are high, and the economic benefits are difficult to meet the requirements. Therefore, this paper analyses the economics of coal-power green ammonia blending based on different scenario modes. Firstly, it reviews the development status of coal-power green ammonia blending and analyses the influencing factors of the cost-effectiveness of coal-power green ammonia blending; secondly, it analyses the economy of coal-power green ammonia blending by constructing different typical scenarios; and lastly, it provides reasonable suggestions for the sustainable development of the industry in various stages.