Due to the absence of autonomous regulations and implementation measures of the"Law on Regional Ethnic Autonomy",the exercise of regional level autonomous legislative right in Guangxi is extremely limited. Seeing from the legislative situation of the autonomous county,despite the fact that the whole autonomous counties have already formulated regulations,a number of problems still exist,i.e. terms or structure of the upper law are repeated, some provisions are beyond the legislative authority, vague in content or lack of operability, legal liability provisions are absent, poor reflection of ethnic characteristics,low quality of legislation, insufficient public participation etc.. For the effective implementation of"Law on Regional Ethnic Autonomy",it is necessary to repair the relationship between central government and autonomous region according to the preferential theory,and autonomous regulations and implementation measures ought to be enacted as soon as possible. In the legislative process, we should set up an evaluation mechanism for autonomous legislation, and plan autonomous legislation scientifically. In addition, we should set up a think-tank of experts specialized in ethnic legislation,expand the channels and efforts for public participation, and establish and improve the supervision and protection mechanism for the implementation of autonomous regulations.