Tibetan area of Sichuan Province is the green shelter for national ecological security, so the local agriculture should follow the path of green development rather than the traditional way. To develop green agriculture, proper policies need to be put forward. Therefore, it is necessary to simulate and test the policies proposed and see the long-term outcomes of implementing each policy before making the final decisions. The system dynamics model is a suitable way to simulate the impact of various policies on the development of green agriculture in the Sichuan Tibetan area from a dynamic and systematic perspective. Unlike existing studies that only consider unilateral policy impact, this paper conducts policy simulations from multiple aspects of population, investment and ecological environment. The simulation results showed that population policy and investment policy had a significant effect on improving the agricultural economic benefits. The agricultural output value will increase maximum of 2.8% if the population grows by 1.2% and more rural people are engaged in agricultural activities. The grain output will increase maximumly 9.8% if the sown area of crops increases by 1.2% each year and the investment in agricultural fixed assets increases by 2%. Green policy played a significant role in improving the ecological benefits of agriculture, and the maximum relative ratio of the green index of agricultural development was 12.2%. Finally, some suggestions are put forward, including government investment, protection of the agricultural ecological environment, and promotion of the agricultural market. It is anticipated that this system dynamic model and suggestions can contribute to the green development of agriculture in the Sichuan Tibetan area and other areas.

四川藏区是国家生态安全的绿色避难所，当地农业应走绿色发展道路，而不是传统方式。发展绿色农业，需要提出适当的政策。因此，在做出最终决定之前，有必要对所提出的政策进行模拟和测试，并查看实施每项政策的长期结果。系统动力学模型是从动态和系统的角度模拟各种政策对四川藏区绿色农业发展的影响的合适方法。与现有研究只考虑单边政策影响不同，本文从人口、投资和生态环境等多个方面进行政策模拟。模拟结果表明，人口政策和投资政策对提高农业经济效益有显着影响。如果人口增长1.2%，更多的农村人口从事农业活动，农业产值最高增长2.8%。农作物播种面积每年增加1.2%，农业固定资产投资增加2%，粮食产量最高可增加9.8%。绿色政策对提高农业生态效益的作用显着，农业发展绿色指数的最大相对比率为12.2%。最后提出了政府投资、农业生态环境保护、农产品市场促进等方面的建议。