Stay up all night cause constipation patients can oral mannitol, polyethylene glycol, polyethylene glycol is usually used to do colonoscopy patients, take 1-2 hours after the intestinal peristalsis will be accelerated, so as to promote defecation, but the patient should avoid common use of this kind of drug. Because this kind of drugs to promote intestinal peristalsis function is relatively strong, long-term use will cause electrolyte confusion, is not conducive to the stability of the internal environment. For patients with constipation caused by staying up late, it is recommended to take enough fiber from the diet, because fiber is an important component in the formation of stools, and usually should drink more water. Develop a good habit of waking up early to defecate, usually after a night’s sleep, the intestinal fluid in the intestinal tract contains more water, which helps defecation.