Abstract: In the course of constructing the first-class national course“Coastal Dynamics”, a WeChat mini program for experimental courses was developed. The mini program has a rich experimental materials. And students can access teaching resources, watch demonstration videos and related cases at any time through their mobile phones. In the process of application, it added the access of resources such as“National quality resources sharing course”, “Jiangsu online open course” and“Experimental mu course” etc. , the course resource sharing based on the mini program was established, which saved the jump time of students’ cross-platform access. In the past two years since the application of the experimental class mini-program, compared with the previous offline experimental teaching, it was found that the WeChat mini-program has changed the students' cognition of the experimental class, changing from passive mechanical task completion to active thinking, active hands-on, and interactive communication. It created a good teaching atmosphere for coastal dynamics experiment course, increased students’ interest and cognition in coastal dynamics course, and improved students’ ability of independent thinking and innovatived practice.