Through literature review, this paper introduced, summarized, and analyzed research on weight control by high-intensity interval training, and offered specific suggestions in order to serve as reference for future studies and people who conduct weight control. After literature review, the findings are as follows. 1. The cause of obesity inhibiting by exercise is not just the energy consumed during exercise; moreover, the increase of muscle tissue's ability to obtain energy, the temporal decrease of adipose tissue's ability to absorb energy during exercise, and the change of body composition after exercise training are the main reasons. 2. The high-intensity interval training has a better result in the afterburn effect than steady-state training. 3. Several immediate physiological reactions caused by high-intensity interval training can make the body burn more energy. 4. High-intensity interval training suppresses the appetite for high-fat foods. 5. High-intensity interval training has better results than steady-state training in the consumption of fat.