Agriculture related pollutants have been identified as one of the dominant contributors to contamination of air，water and soil systems，which have an increasing destructive effect and an rising emission trend，and baffle the sustainable development of agriculture，rural area and the whole national economy in China. The article first analyze the situation of agricultural chemicals use and livestock and poultry farming related pollution，and then explore the evolution process of China’s agriculture related environmental policies and their existing main disadvantages. Finally，some strategy issues are proposed for pollution prevention and ecological development. Implementing ecological agricultural engineering technology to develop ecological circular agriculture and breaking the urban-rural dual structure to realize the integration of urban and rural development are the core policies of agricultural sustainable development，and with systematic use and extension of the rural methane project as current crux of agricultural greenization and ecologicalization in China.