9-month-old babies are prone to constipation. Infants and toddlers are more fragile and need to use scientific methods to improve their physical condition. 1, increase the intake of water: increase the intake of water is the most durable and least harmful treatment for 9-month-old babies. Let your 9-month-old baby take in water in small amounts many times, especially pay attention to let your baby hydrate after drinking formula. 2, massage method to treat constipation: massage method can not hurt the baby’s body as much as possible, the mother can do clockwise massage in the baby’s abdomen, pay attention not to use too much force to hurt the baby. Massage once or twice a day can be, massage time should not be too long. 3, diet adjustment: supplement some fiber-rich food can treat and prevent baby constipation. Give your baby more fiber-rich vegetables and fruits, choose good digestible fruits, and choose suitable vegetables and fruits for your baby according to the doctor’s instructions. 4, medication: you can choose probiotics, or some digestive Chinese medicine, are helpful to relieve constipation. Lactulose can improve the stool properties, can also be applied under the guidance of a doctor. 5, enema method for constipation: enema method can be effective and timely treatment of baby constipation disease, generally choose open-cell enema, pay attention not to long-term application, need to be applied under the guidance of a doctor. The 9-month-old baby’s body is not fully developed, more vulnerable to injury, take scientific and harmless treatment methods more help baby’s health.