The back of the head of the baby fell big bag can be through the cold compress, timely delivery of medical treatment and other ways to deal with. 1. cold compresses: when the baby fell on the back of the head, you can first cold compresses, so that the local vasoconstriction, reduce the local swelling. 72 hours later can be changed to hot compresses, to promote the absorption of hematoma. 2. Timely medical treatment: the back of the baby’s head fell big bag, and accompanied by poor mental state, crying, vomiting and other abnormalities, need to go to the hospital in a timely manner, through the head CT to see whether there is damage to the brain tissue, and then targeted treatment. Even if the baby has no other discomfort, it is still recommended that parents actively take the baby to the hospital for examination to rule out intracranial lesions. Parents should pay attention to the big bag on the back of the baby’s head, consult a doctor in time, and handle and treat it under the guidance of a professional doctor.