The stomach is difficult to want to stool but can not pass may be due to constipation, irritable bowel syndrome, proctitis and so on. 1. Constipation: It refers to the decrease in the number of bowel movements and the difficulty in passing dry stools. The main manifestations are reduced frequency of defecation, difficult defecation and other symptoms, which may be accompanied by abdominal pain, abdominal distension, lack of appetite and other symptoms, which leads to the stomach wants to stool but can not be discharged. 2. Irritable Bowel Syndrome (IBS): It is a functional bowel disease with abdominal pain, bloating and abdominal discomfort as the main symptoms. The main manifestations of abdominal pain, abdominal distension, diarrhea or constipation and other symptoms, can be accompanied by insomnia, anxiety, urinary frequency, urinary urgency and other symptoms, which can also lead to the stomach want to stool but can not come out. 3. Proctitis: it is an inflammation of the inner wall of the rectum. The main manifestations are frequent or persistent bowel movements, blood in the stool or rectal bleeding, abdominal pain, constipation, diarrhea, pain in defecation, and other symptoms, which can also be manifested in the stomach wanting to have a bowel movement but can’t get it out. There are many other causes of hard to pass stool but not out, which should be taken seriously, timely consultation, identify the cause of the disease, and follow the medical advice for further treatment or therapy.