Based on the empirical analysis of the achievements and current status of autonomous legislation in 37 ethnic autonomous prefectures and counties in Yunnan Province for more than 30 years,this paper investigates the current legislation of China’s ethnic autonomous regions in terms of characteristics,existing problems and influencing factors during law enforcement.The paper also puts forward seven measures to improve the legal system of ethnic regional autonomy and six ways to reinforce the implementation of laws and regulations in ethnic autonomous Regions