Exercise can make people feel happy, relaxed and lively, and it can cheer them up more than taking any good medicine. Studies have proved that emotions and emotions are the result of objective stimuli affecting cerebral cortex activities. The external manifestations and internal changes of the body in emotional activities are related to the functions of the nervous system at all levels, and are the result of the coordinated activities of the cerebral cortex and subcortical center. Running, jogging, swimming, playing badminton, volleyball, basketball, football, cycling, mountain climbing and other sports. It can strengthen the heartbeat, promote the blood circulation and metabolism of the digestive system, make the brain get enough oxygen and nutrition, calm down the excitement and inhibition of the brain tape measure, and thus achieve the purpose of improving bad emotions. These exercises should last 3-5 days a week, with at least 30 minutes each time. Physical exercise not only affects physiological parameters, but also affects personality characteristics, especially plays a great role in emotional stability. Participating in sports activities can make people highly focused and is an effective way to control mental stress and psychological obstacles. They help to eliminate excessive tension, channel pent-up energy, ease or alleviate bad emotions and maintain mental health. Participating in sports competitions can provide a "drainage outlet" for bad emotions, so that the impulse generated by setbacks can be promoted to the driving force for progress. Sports have clear rules, so for those who are treated unfairly in social life and those who are eager for fair competition, sports is undoubtedly a good place to vent and realize their ideals. Some psychologists have affirmed the emotional excretion of exercise through a lot of research. These scholars believe that physical exercise is not only leisure or physical exercise, but also has the value of psychotherapy. It is like a purifying agent, which allows participants to vent and sublimate their pent-up emotions and energy through socially recognized channels and heal their injured hearts.