Children’s head hit a big bag can be through the ice compress and then bandaged, if the hematoma is larger need to be treated through surgery. 1. Ice: children’s head fell a bag, if the scalp hematoma bleeding is small, within 72 hours you can first use an ice bag or ice towel on the affected area for ice, which can promote the absorption of hematoma, relieve pain and bruising. 2. Invasive treatment: if the hematoma is large and the coagulation is normal after the child’s head is knocked into a big bag, the hematoma can be punctured and pumped out, and the swelling can be reduced by the way of pressure bandage. If the hematoma is infected, the hematoma needs to be incised and drained in time. Children with large head bumps can be treated on their own in less serious cases, but if the hematoma is large or infected, they must go to a regular hospital as soon as possible to avoid delaying their condition.