At present,China's marine plastic waste pollution is becoming more and more serious,and the task of treatment is imminent.Based on the actual situation of marine plastic waste management in China,the paper analy-zes the legal dilemmas that exist in the process of marine plastic waste management in China,such as incomplete legal and regulatory system,vague governance rights and responsibilities,absence of cooperative governance sub-jects and insufficient law enforcement and supervision.It also gives solutions to improve the legal system,delimit the boundary of power and responsibility,build a multi-subject governance pattern and strengthen law enforcement and supervision.