The child fell on the head of the bag is mainly trauma caused by subcutaneous hematoma, you can choose to local disinfection, hot and cold compresses, immediate medical treatment and other methods. 1. local disinfection: after the child fell, will be due to the injury of subcutaneous hematoma, manifested in the head of the bag, should pay attention to local disinfection, you can choose to wipe iodine pov, to prevent the emergence of infection. 2. Hot and cold compresses: the child fell on the head after the bag, in order to prevent further aggravation and spread of subcutaneous hematoma, you can first carry out a cold compress treatment, swelling and pain. Hot compresses can be applied for more than 72 hours to promote subcutaneous blood circulation, which is conducive to the absorption and subsidence of the hematoma. 3. Immediate medical attention: the child’s head after the fall, if accompanied by nausea and vomiting, drowsiness and fatigue and other related symptoms, should attract great attention, do not rule out intracranial hemorrhage, should immediately go to the hospital, cooperate with the doctor to check and deal with. Parents should pay attention to their children after a fall, and under the guidance of the doctor for examination and treatment.