The abdominal pain is caused by the following reasons: 1, caused by the digestive and absorption disorders of the gastrointestinal tract of the body, the body’s gastrointestinal tract mucous membrane congestion and edema during exercise, which leads to abdominal pain. Most due to the usual diet is not careful, eat too much spicy food, etc., resulting in gastrointestinal tract digestive system dysfunction, which leads to abdominal pain. 2, due to the body’s exercise, the abdominal wall muscle soft tissue strains caused by belly abdominal pain. Due to strenuous activities or lifting heavy objects, etc., resulting in soft tissue strain of the abdominal muscles, in the time of exercise, due to muscle contraction caused by pain, to reduce exercise, more rest.