Four-month-old baby constipation, there is no fast defecation methods, need to be targeted according to the baby’s condition to deal with, generally can be abdominal massage, probiotics regulation, if constipation is serious, occasionally can use once a Kesler to defecate, in addition to be alert to surgical disease, if necessary, surgical treatment. 1. General measures: It is recommended that parents can usually massage the abdomen to promote gastrointestinal motility to defecate. 2. Medication: Some children with severe constipation can occasionally use a quick defecation with a plug and a micro-ecological preparation such as Bifidobacterium triphylium. 3. Surgical treatment: If the constipation is caused by congenital megacolon, congenital anorectal malformation and other organic diseases, it is necessary to carry out intestinal fistula, anal canal anastomosis and other surgical treatments. In most cases, the baby constipation can be cured after taking timely and effective treatment measures, the prognosis is good, if there is discomfort during the use of medication, should go to the hospital.