The baby more than 3 months back of the head raised a large bag, first of all, to clarify the cause, physiological factors can be given to observe, pathological factors should be symptomatic anti-infection, surgical resection treatment. 1. Pathologic factors: (1) lymph node enlargement: baby occipital lymph nodes, if there is lymph node infection, there will be lymph node enlargement, generally do not need special treatment, you can first observe, if necessary, give anti-infection treatment, follow the doctor’s advice to take such as amoxicillin clavulanate potassium. (2) Lipoma: if the baby has a bag on the back of the head, it may be a lipoma, which can be observed for the time being and can be surgically removed if necessary. (3) boils: a baby with a raised bag on the back of the head, there may be boils, and should be promptly given to the surgery to determine the cause of the disease. 2. Physiological factors: a baby with a raised bump on the back of the head may be the occipital bone. This is a normal physiological phenomenon. No special treatment is needed. When the back of the baby’s head appeared big bag, should be timely hospitalization to clarify the cause.