A few days without bowel movement is considered to be related to functional constipation, dyspepsia, hemorrhoids, proctitis, intestinal obstruction and so on. 1. Functional constipation: mainly associated with poor defecation habits, insufficient fiber intake, sedentary and so on. Typical symptoms of patients are less frequent defecation, difficult defecation, incomplete defecation, etc., which can be manifested as several days without bowel movement. 2. Dyspepsia: the disease is related to gastrointestinal dyskinesia, decreased gastric tolerance to food diastolic function. Typical symptoms include postprandial fullness, pain in the upper and middle abdomen, etc., easily accompanied by heartburn, lower abdominal pain, diarrhea and constipation, etc., which can also be manifested as several days without bowel movement. 3. Hemorrhoids: the cause of the disease is not yet completely clear, considered with poor defecation habits, sedentary and other factors. The disease often causes patients to have anal pain, anal itching, blood in the stool, defecation difficulties and other symptoms, and some patients will appear for several days without bowel movement phenomenon. 4. Proctitis: the disease is related to infection, bad dietary habits, poor immune function, etc., easy to cause patients to have a sense of urgency, pain in defecation, diarrhea, constipation, etc., can also be manifested as a few days without bowel movement. 5. Intestinal obstruction: the cause is more complex, such as intestinal foreign body, intussusception, fecal blockage. Common symptoms of intestinal obstruction include abdominal pain, vomiting, abdominal distension, stopping defecation, and not passing stool for several days. There are many reasons for not passing stool for several days, besides the above causes, there are also congenital megacolon, intestinal cancer, anal fissure, etc. It is recommended to consult a doctor in a timely manner to clarify the cause of the disease, treat the cause and alleviate the symptoms in a timely manner so as to avoid delaying the condition.