If your stomach is grumbling and hard, it may be related to constipation or chronic colitis. 1. Constipation: If the recent diet is not appropriate, such as not supplementing dietary fiber, eat too greasy and other difficult to digest food, can affect the gastrointestinal tract peristalsis, resulting in stool accumulation in the intestine caused by constipation, triggered by poor defecation, defecation difficulties, etc.; the patient may have abdominal bloating, tightness of the belly and other symptoms. 2. Chronic colitis: common in bacterial, viral and other pathogenic infections, caused by inflammatory changes in the colon, the patient may have abdominal pain, pus and blood stool, constipation and diarrhea alternating symptoms; some patients may have abdominal distension, abdominal muscle tension of the clinical manifestations. It is recommended that patients with abdominal discomfort should go to the hospital in a timely manner, and actively cooperate with the doctor’s diagnosis and treatment.