Abstract: The function of agricultural ecosystem service, produced by the process of agricultural ecology and human's activity, is the natural environment and utility on which the human being is dependent upon. The increase of waste from cities, the heavier of agricultural chemical pollution, the serious pollution produced by poultry waste, as well the pollution produced with the development of township enterprises have affected the organic production of agricultural ecosystem, reduced the quality of produce, weakened the soil ecological process, destroyed biodiversity, weakened the function of climate regulation and disaster-reduction, decreased insect pollination and the effect of control pest. It is the key to protect the function of agricultural ecosystem service to check the environmental pollution.