Pediatric constipation is defined as difficulty in defecation that lasts for 2 weeks or more. Normal population of pediatric constipation occurs 8% to 18.0%. Constipation has the following four manifestations: 1, the number of bowel movements less than 3 times / week, the serious can be 2 ~ 4 weeks bowel movement once; 2, prolonged defecation time, the serious each time the time of defecation can be as long as 30 min or more; 3, changes in stool properties, feces dry; 4, defecation difficult, laborious, defecation feel incomplete. What are the causes of pediatric constipation 1, colorectal and anal diseases: ① congenital megacolon; ② anorectal malformations; ③ anal stenosis; ④ anal pain diseases: anal fissure, dermatomyositis; ⑤ exit obstruction: such as pelvic floor muscle spasm syndrome. 2, secondary to other diseases endocrine, metabolic and toxic (diabetes mellitus, hypothyroidism, etc.); neurological (spinal cord trauma, spinal cord bulge, etc.); connective tissue disease (scleroderma, cystic fibrosis, etc.) 3, secondary to mental illnesses such as repression, anorexia nervosa, psychosis, etc.; secondary to medications or toxins, bad habits such as overeating, fine food, few vegetables and fruits, little drinking water, and Less exercise, sedentary, caused by poor defecation habits, such as elementary school students due to the short period of time between classes to hold back the stool, resulting in constipation. What are the diagnostic measures of constipation? 1, Rectal palpation is a basic examination to identify anatomical abnormalities 2, Laboratory examination to detect the presence or absence of primary causes of constipation, such as diabetes mellitus, hypercalcemia, hypothyroidism, etc. 3, Radiological examination barium enema to observe the morphology of the colorectum; colon transport experiment to follow up on the discharge of stools, etc. 4., Colonoscopy 5, Anorectal dynamics: an emerging diagnostic test for diagnosis of constipation and guidance of treatment has an important role in guiding. Treatment has an important guiding role. How to treat pediatric constipation? For children with organic diseases or metabolic disorders of constipation, they should go to the hospital in time to find out the cause of the disease, and carry out etiological treatment; other causes of constipation, should also be under the guidance of a professional doctor to carry out dietary modification, medication, biofeedback training and even surgical treatment.