In 2006, the ILO adopted the Maritime Labour Convention, which has had an important impact on the rights of seafarers worldwide and the promotion of the international maritime industry. In recent years, China's labor and social security legal system has been gradually improved, and legal norms such as the Regulations on Seafarers and the Maritime Traffic Safety Law have been promulgated and implemented successively, laying a certain foundation for the system of labor norms for seafarers. However, these special legislation has some limitations, such as not strong operability and not identical with the international treaty system. This paper mainly studies the framework structure and implementation mechanism of maritime labor conventions, finds out China's application method of international law, and puts forward the shortcomings of China's implementation process and corresponding countermeasures and suggestions suitable for the current situation of Chinese seafarers. By combining theory with practice, this paper uses literature analysis and analysis deduction to find out the strategies that can optimize the implementation mechanism in China. At present, China has made a lot of preparations for the implementation of maritime labor conventions, carried out a lot of legislative activities, and has already acquired relevant legislative experience and technology. Improving the labor supervision system and making full use of the tripartite mechanism platform and industry associations are the top priorities for China to better implement international conventions and protect the rights and interests of seafarers in the next stage.