The construction of credit system plays an important supporting role in optimizing business environment and enhancing the soft power of regional competition. Through systematic thinking and understanding of the connotation and concept of the social credit system currently being carried out in China，the progress of policy system，standard system，unified credit code，joint reward and punishment mechanism，credit information sharing，key areas development，special governance，urban credit system，etc. of the construction of social credit system in China in recent years were analyzed. At the same time，the problems and challenges faced in the development of credit legislation，credit culture，credit reporting system，government credit and judicial credit，joint punishment mechanism，application of credit products，balance of development and protection of the main rights and interests were also objectively analyzed. The promotion path was proposed in terms of laws and regulations，standards and norms，moral culture，information platform and working mechanism. Especially for the construction of CBD regional credit system，practical measures and suggestions were put forward，looking forward to provide reference examples for the construction of social credit system under the drive of CBD regional credit system construction mode.