Cool stomach during exercise may be a normal physiological phenomenon, or it may be caused by gastroenteritis, peptic ulcer, gastrointestinal tumor and other diseases. 1. Physiological factors: exercise is usually accompanied by a lot of sweating, which can take away the heat from the surface of the body, thus feeling cold stomach; exercise, especially when a lot of aerobic exercise, will consume a large amount of heat, will also feel the stomach cold; exercise will reduce the local blood supply in the digestive tract, which will lead to a decrease in the temperature of the abdomen and feel the stomach cold. 2. Pathological factors: gastroenteritis, peptic ulcer, gastrointestinal tumors and other diseases, exercise may produce stimulation of the gastrointestinal tract, resulting in gastrointestinal dysfunction, which may also make the patient feel cold stomach. At this time, the patient may also be accompanied by abdominal pain and bloating, acid belching, nausea and vomiting and other uncomfortable symptoms. In addition, women who are in their menstrual period may also feel cold stomach during exercise. If the patient has cold stomach during exercise for a long time or repeatedly, it is recommended to consult a doctor in time to identify the cause under the guidance of a professional physician and carry out targeted treatment to avoid delaying the condition.