Abstract: In assessing the influence of agroforestry system and its agricultural production management on local environment, the establishment of assessment indicator system is the basic and key problem. Taking the agroforestry systems in Weibei Upland, Shaaxi province, as a case, based on the sufficient study, the environmental assessment indicator system was established in this paper, which consists of four sections: the environmental contamination indicators, the agricultural products contamination indicators, social economical indicators and eco-environmental quality indicators. At the same time, using this assessment indicator system, the environmental quality of agroforestry systems was assessed by applying multilevel fuzzy synthetic evaluation model, analytical hierarchy process and improved standard weight deciding method, the assessment result is consistent with the reality.