Public participation in administrative decision-making is one of the basic avenues to realize publicans’ rights. It is also the essence of publican mastering their own affairs. In recent years, China has carried on a valuable practice and exploration in public participation in the administrative decision. However, there still exist some problems: First, the main body of the participation is not clear; second, the civil-motion system of public participation doesn’t exist, third, the manners of participation are one fold. Fourth, the public participation cannot receive a feedback. Therefore, there are many hurdles in the process of institutionalization and legalization of public participation. Inspecting the success and failure in public participation in Northwestern China, we can find that constructing a mechanism of public participation is an important content to establish democracy and legal system in our country currently.