Constipation is defined as constipation, decreased frequency (≤2 bowel movements/week) or prolonged duration of bowel movements, or a feeling of poor, painful, incomplete bowel movements. Constipation can be a separate disease or a symptom of other diseases. Chronic constipation can lead to anal fissures, hemorrhoids, and loss of appetite, and needs to be taken seriously. Constipation in children is divided into functional constipation and organic constipation, with functional constipation accounting for more than 90% of constipation in children. Its occurrence may be related to insufficient intestinal stimulation, lack of intestinal dynamics caused by reduced intestinal mucosal stress, etc. The treatment of functional constipation in children mainly includes basic treatment and medication. Basic treatment refers to adjusting the diet structure, encouraging children to drink more water, exercise appropriately, and increase the intake of dietary fiber (vegetables, fruits, cereals and potatoes). Give low-fat, easily digestible food and avoid spicy and stimulating. Use warm saline and enema to remove stools, and oral laxatives such as lactulose to slowly soften stools. Reasonable toilet training, such as children over 4 years old, toileting for 5-10 min after each meal every day to establish the conditioned reflex of defecation. For organic constipation, the cause needs to be identified as early as possible and treated for the primary disease. The treatment of constipation is long-term, and emphasis should be placed on family education and health education, guidance on reasonable diet and lifestyle, and the application of non-pharmacological therapies. Regular follow-up visits and reasonable use of medication under the guidance of doctors.