Constipation is very common in young infants and is a problem that bothers parents. Constipation can be characterized by a decrease in the number of bowel movements (≤2 times/week), dry stools, long and strenuous bowel movements, pain, and a feeling of incomplete bowel movements. Long-term constipation affects the health of children and can lead to anal fissures, hemorrhoids, loss of appetite and indigestion. Therefore, constipation is not a minor problem, in addition to medication, behavioral therapy, etc., dietary treatment is also very important. Since stool is composed of food residue, water and bacteria, the amount and frequency of stool is closely related to diet. A proper diet can be used to treat constipation, and breastfeeding a 1-year-old baby as much as possible can prevent and reduce constipation. First of all, drink more water to keep enough water in the intestinal cavity to soften the stool, thus achieving the purpose of treating dry stool. Change the dietary structure to increase dietary fiber, including fruits (cooked bananas, apples, pears, etc.), fresh vegetables (celery, leeks, spinach, cabbage, radishes, etc.), whole grains, potatoes, etc., and reduce the intake of high-protein, refined and processed foods. Most constipation is functional, but the treatment is long-term and usually easy to repeat. Family education and health promotion should be emphasized, and most can be improved and cured through a reasonable diet and lifestyle. A small percentage of constipation requires medication, and a very small percentage of organic constipation requires surgery and other treatments. Therefore, if the effect of dietary treatment is poor, you need to seek timely medical attention.