Swimming is the least damaging sport to the human body among all sports. Team swimming adds a lot of fun to team life. At the same time, swimming in outdoor education programs can also teach people about river knowledge and safety control. The instructor will collect information on the swimming ability of each member, and focus on safety. All members wear life jackets (which is a basic requirement for risk control) and swim in natural rivers. The instructor will give students an explanation of river knowledge and the division of safe areas. At the same time, the instructor will also supervise safety on the shore and in the water.