Failure to pass stool may be related to gastrointestinal dysfunction, intestinal obstruction, insufficient intestinal motility and so on. 1. Gastrointestinal dysfunction: slow peristalsis of stomach and intestines leads to food not being digested and absorbed quickly, and food residue accumulates in the intestines and cannot be discharged from the anus smoothly, resulting in the inability to pass stools. 2. Intestinal obstruction: Inflammatory reaction in the intestines leads to narrowing of the intestinal tract, and feces can not pass through the intestines to the anus smoothly, which will also lead to failure to pass stools. 3. Insufficient intestinal power: less movement, poor gastrointestinal power, resulting in weak abdominal muscle strength, defecation power is insufficient, resulting in the stool does not come out. If you can’t pass stool, it is recommended to go to the hospital in time for examination, to clarify the cause of the disease, and to actively treat it, so as to avoid blindly using medication, which will cause damage to the body.