Common causes of constipation in infants include dietary factors, environmental factors, diseases, etc. Treatment includes dietary adjustment, improvement of relief and treatment of diseases. 1. Dietary factors: the infant digestive system is not yet well developed, if too early to eat solid food or daily water supplementation is insufficient, can lead to slow intestinal peristalsis, the phenomenon of hard and dry stools, so add complementary foods to follow the principle of from less to more, from fine to coarse, and every day to make up for the water. 2. Environmental factors: when the environmental temperature is too high or wearing too much, can lead to the baby’s water loss, thus affecting the stool properties, constipation, usually room air circulation, appropriate increase or decrease in clothing. 3. Disease factors: the baby suffers from such as anal fissure, acute upper respiratory tract infection, etc., can cause constipation, treatment in addition to the treatment of the primary disease, but also add intestinal probiotics lactobacillus bacillus bifidus and other intestinal bacterial flora, oral lactulose to soften the stool, promote defecation. If necessary, you can use corkscrew to help defecation. The baby constipation is recommended to go to the hospital in time for relevant examination, clear cause of the disease and then actively treat the symptoms. The above medications should be used in accordance with medical advice.