There are two ways in which the muscles in the stomach can hurt when pressed, one is a problem with the muscles themselves and the other is a problem with the organs in the abdominal cavity. The problem of the muscle is considered to be the abdominal muscle strain after strenuous exercise or improper exercise, and there will be pain when pressing or contracting the abdominal muscle, such as rolling over, sitting up and other movements. When lying down, resting, and not exerting the abdominal muscles, there is no pain, and it can be gradually relieved by hot compresses and rest. If lying still is also very painful to consider the problem of acute abdomen, such as appendicitis, cholecystitis, enteritis and so on. In this case, the pain and position has nothing to do with, and curled up state will feel comfortable, once the internal organs of the problem need to go to the hospital in a timely manner.