If you want to poop but can’t, consider dietary causes and disease causes. Dietary causes include eating less vegetables and fruits, drinking less water, etc. Disease causes include proctitis, ulcerative colitis, intestinal mass, intestinal obstruction, etc. 1. Dietary causes: such as eating less vegetables and fruits, drinking less water, etc. can lead to a decrease in the amount of feces and dry stools, thus leading to defecation difficulties. 2. Disease causes: such as proctitis can also have abdominal pain, anal distension and other symptoms; ulcerative colitis can also have mucus, pus and blood stools, diarrhea and constipation alternately and other symptoms; intestinal mass can also have a change in defecation habits, blood in the stools and other symptoms; intestinal obstruction can also have abdominal pain, vomiting, stopping the exhaust and other symptoms. For those who want to have a bowel movement all the time but can’t, it is recommended to consult a doctor to clarify the cause.