A large hard bulging stomach is not necessarily a disease. This may be a normal phenomenon caused by pregnancy, but it may also be related to pathological factors, such as constipation, dyspepsia, cirrhosis of the liver and so on. 1. Physiological factors: the uterus is about 50g before pregnancy, the uterus can even increase more than 100 times during pregnancy, the abdomen is enlarged and hardened, the clinical examination found that the patient’s stomach is big, hard, bulging, generally a normal phenomenon, the patient does not need to worry too much. 2. Pathological factors: constipation and indigestion can cause food to stagnate in the intestines, resulting in abdominal distension, hardening of the abdomen, and symptoms of a large, hard, bulging stomach. For patients with cirrhosis of the liver, venous blood reflux obstruction leads to blood stagnation, blood leakage into the abdominal cavity to form ascites, will also appear in the stomach hard bulging situation, the symptoms will be more pronounced when upright. Acute intestinal obstruction may also be accompanied by the cessation of defecation, requiring fasting, gastrointestinal decompression, the use of some drugs such as growth inhibitors, acid suppression drugs. If the patient appears to have a big hard bulging stomach, it is recommended to go to the hospital in time to find out the cause of the disease, standardized treatment, so as not to delay the condition.