There are many reasons for belly cramps, which should be analyzed on a case-by-case basis.1. Consider whether the cramps are caused by the lack of proper exercise of the stomach muscles due to maintaining a posture for a long time. It is important to avoid a single posture for a long time, and you should get up every once in a while to prevent belly cramps. 2. It may be caused by acute inflammation, such as chronic gastroenteritis, which leads to abdominal cramps. At this time, attention should be paid to whether the symptoms of chronic gastroenteritis, you can go to the hospital to do a specialist examination to exclude the possibility of gastroenteritis. 3, abdominal lesions can lead to abdominal cramps, such as tumors cancer, acute diseases 4, is also the most common weather conditions, cold weather without attention to warmth can lead to abdominal cramps, should be in the case of weather changes in a timely manner to do warmth measures.