The stomach is particularly hard to consider is caused by physiological factors, may also be constipation, peritonitis, abdominal tumors and other factors caused. If it is caused by physiological factors, there is no need to check, but if it is caused by disease factors, you can consider X-ray, abdominal ultrasound, blood routine and other tests. 1. Physiological factors: frequent abdominal anaerobic exercise, such as sit-ups, etc., will reduce the abdominal fat content, the abdomen has a harder feeling, such cases do not need to be examined, is a normal phenomenon. 2. Constipation: Constipation can be caused by the accumulation of feces in the intestines. Functional constipation patients do not need special examination, through increased intake of vegetables, fruits and other foods rich in dietary fiber and drink more water and other ways to discharge feces; organic constipation can be caused by intestinal obstruction, internal hemorrhoids and other factors, internal hemorrhoids can be examined through the rectal fingerprinting examination, intestinal obstruction can be examined through the X-ray and other ways. 3. Peritonitis: patients with peritonitis may have muscle tension, leading to hardening of the stomach. It can be observed whether there is elevation of white blood cells through blood routine, abdominal ultrasonography can determine whether there is parenchymal organ lesions, and it can also be determined through abdominal puncture. 4. Abdominal tumor: endoscopy can be used to determine whether there is a gastrointestinal tumor, puncture biopsy can determine the nature of the tumor, and X-ray, ultrasound and other imaging modalities can also be applied to determine whether there is an abdominal mass. It is recommended to go to the hospital for consultation after eliminating physiological factors in the case of especially hardness in the stomach.