Exercise training is not only a necessary means to improve the level of exercise, but also an important means to improve the body’s immunity. Different time, intensity, items, and forms of exercise training have different effects on the body’s immune function. As a double-edged sword to improve the body’s immune function, exercise training is a different reaction mechanism of different immune cells after exercise training. This paper combined with foreign scholars’ studies on the immune function of the body of literature from different exercise intensity, different time, different sports, different movement forms, and different external environment such as angle of view for athletes body’s immune cells and humoral immunity summarized the various indexes such as combing, in order to help academia, medicine, and sports. It provides enlightenment to the contemporary public on how to participate in sports training more healthily.