In recent years, with the continuous development of the credit rating industry in our country, the voice of building the rating regulatory system is sprouting up. This article introduces the rating regulatory system of the United States, Japan and the European Union. According to the experiences and lessons from developed countries such as America, to solve the immature legal system of rating industry, lack of unified qualification recognition mechanisms and other issues, we need to improve the legal system, unified standards, strengthen the regulation of rating markets and institutions, formed a credit rating system, which contains the government management, self-discipline and social supervision. Key words: Credit rating; Legal system; Approval system; Regulatory agencies