The treatment of erythema on the back of the head of infants is based on the causes of the disease, such as poor sleeping position, birthmark, hemangioma, etc., such as adjusting the sleeping position, liquid nitrogen freezing, laser treatment, and so on. 1. Poor sleeping position: when the baby is in supine sleeping position for a long time, the long-term pressure can lead to erythema at the back of the head, when the child’s head is turned over, the erythema will disappear soon, and at this time, the parents need to adjust the baby’s sleeping position. 2. Hemangioma: when the infant suffers from hemangioma, the abnormal proliferation of blood vessels leads to superficial skin congestive plaques, which can appear as erythema at the back of the head. When the area of erythema is relatively small and there is no tendency to expand, it can be treated with laser therapy or liquid nitrogen; when the area of erythema is large or there is a tendency to expand the area, it can be treated with surgical excision and joint implant surgery. 3. Birthmark: when the child is born with a birthmark on the back of the head, it can be manifested as erythema on the back of the head of the baby. If necessary, the erythema can be removed by laser treatment, and after the operation, attention should also be paid to nursing work such as paying attention to sun protection. When the erythema on the back of the head of infants, it is recommended to go to the hospital in time to do further relevant examination and treatment under the guidance of professional doctors.