Abstract: The old environmental monitoring experimental teaching system of the China Ocean University's is outdated.The content is monotonous.It has too much validation experiments,less distinctive marine features and is unfavorable to the cultivation of marine professionals having comprehensive experiment skills andinnovative ability.This paper reformed the experimental teaching system,joined the departments of comprehensive experiment and research experiment,and established a new evaluation system.The comprehensive experiment was carried out in the form of ocean survey.And the research experiment mainly carried out research on marine environmental monitoring,highlighting the marine characteristics.The reform of this course will augment the content and be conductive to the cultivation of marine professionals and exercise the research ability and train the marine environmental protection consciousness of students.