(1.Graduate school，Wuhan Sports University，Wuhan 430079，China；
2.Sports Social Science Research Center，Wuhan Sports University，Wuhan 430079，China；
3.School of Economics and Management，Wuhan Sports University，Wuhan 430079，China)
Abstract: Through the methods of literature review and field investigation, taking Hubei provincial government's purchase of national fitness events from sports social organizations as a research case, it is concluded that the dual governance mechanism of contract governance and relationship governance is formed in the government's purchase of public sports service projects, and contract governance comes from the economic rationality of modern legal system, taking formal contracts as an important foothold, and using incentive mechanism, supervision mechanism and punishment mechanism to ensure the formality of projects; relationship governance comes from the limited rationality of participants as human beings, and takes the uncertainty of transaction contents in informal contracts as the action space, and adopts means such as reputation mechanism, experience mechanism and trust mechanism to further improve performance behavior. These two mechanisms complement each other, which is the expression of the joint action of rule by law and by human. The government should start with "incentive-supervision-punishment" to further improve the content of contract governance, and sports social organizations should actively play the role of sports governance subject and pay attention to the establishment and development of relationship governance mechanism with "reputation-experience-trust" as its content.
Key words: public sports service purchase；contract governance；relationship governance；relationship contract；