There are many causes of persistent constipation in children, which need to be treated according to the causes, including medication, surgery and lifestyle adjustment. 1. Colon and anal diseases: such as congenital megacolon, intestinal stenosis, hemorrhoids, etc., leading to obstruction or reduced transmission speed of food in the intestine, thus leading to constipation, which can be treated by surgery and other means in accordance with medical advice. 2. Lifestyle habits: food in the dietary fiber is too little, eat less, drink less water and other causes of constipation, you can increase the intake of dietary fiber, the use of polyethylene glycol, lactulose and other laxatives diarrhea, or the use of enemas such as Keselow to help defecation, but can not be used for a long time. Probiotics can also be used to improve the function of the digestive system, such as Bacillus subtilis bacillus granules. 3. Psychological factors: due to daily emotional stress, depression and other negative emotional impact, resulting in gastrointestinal nerve dysfunction, can be improved by going to bed early and waking up early, maintain emotional stability, maintain optimism and other lifestyle. Daily also need to adjust lifestyle, reasonable diet, drink more water, eat more fresh fruits and vegetables, increase the intake of dietary fiber, appropriate exercise, improve intestinal peristalsis, develop a good habit of defecation. Children with persistent constipation are advised to consult a doctor in time to avoid delaying the treatment. All of the above drugs should be used under the guidance of a doctor.