Chest pain after playing ball can be caused by physiological reasons, trauma, pneumothorax, coronary heart disease and other factors. 1. Physiological reasons: after playing ball and other strenuous exercise, the anaerobic activity of the chest wall and other parts of the chest wall is enhanced, which can cause the accumulation of lactic acid, and then the symptoms of chest pain. 2. Trauma: playing ball and other activities in the chest by bumping, impact, can lead to local soft tissue or bone injury, local redness, swelling, pain and activity restrictions and other manifestations. 3. Pneumothorax: commonly found in young and middle-aged people with tall and thin physique, pneumothorax can be triggered after playing ball and other strenuous exercise, and the chest can present diffuse pinprick-like pain symptoms, accompanied by progressive dyspnea performance. 4. Coronary heart disease: playing ball when the body’s strenuous activities, oxygen demand for blood increased, and then the heart pumps more blood, which can lead to insufficient blood supply to the coronary arteries, and then angina pectoris performance, which can be manifested in the chest, the anterior region of the heart squeezing pain, but also to the back of the radial. Chest pain after playing football should be timely medical treatment, under the guidance of specialists to actively carry out appropriate treatment, help early relief of discomfort.