If the patient has both symptoms of bloating and blood in the stool, consider the possibility that the patient may have the following diseases: 1) severe acute enteritis, which causes congestion and edema of the intestinal mucosa after repeated diarrhea, resulting in changes of blood in the stool; 2) inflammatory bowel disease, such as severe Crohn’s disease or ulcerative colitis, which can cause changes of blood in the stool. At the same time, due to the increase in the number of diarrhea, the intestinal mucosa edema, intestinal peristalsis slows down, and the feeling of bloating occurs. 3, such as malignant tumors of the intestine can also cause similar symptoms, such as colon cancer or lymphoma. Therefore, if patients experience the above discomfort, it is recommended that they should go to the hospital as soon as possible to improve the fiberoptic colonoscopy and perform pathological examination to clarify the diagnosis and treat the cause.