Standing up and want to poop lying down without the intention to poop is considered to be caused by physiological factors, but also may be hemorrhoids, intestinal polyps and other disease factors caused by. Feces will usually be transported to the rectum under the action of intestinal peristalsis, the receptors in the rectal wall produce pressure, the body will feel the urge to poop, but if the body at this time to lie down will cause inhibition of defecation reflexes, so stand up and want to poop, but at this time, if you can’t defecate there will be the phenomenon of lying down with no urge to poop. The above situation is caused by physiological factors. In addition, hemorrhoids, rectal inflammation, intestinal polyps and other diseases can occur in the state of anal distension symptoms, standing up due to the role of gravity anal distension symptoms will be more obvious, but when lying down after the anal distension symptoms can usually be relieved, and ultimately there will be a stand up want to defecate but lying down after the lack of bowel movement phenomenon. If you want to have a bowel movement when you stand up and lie down without having a bowel movement, you can rule out physiological factors and then go to the hospital, so that the doctor can make a judgment and clarify the cause of the disease.