Baby headache may be related to respiratory tract infection, sinusitis, cranial diseases and so on. 1. Respiratory tract infections: baby resistance is weak, easy to be bacterial infection or viral infection caused by colds, may cause headaches, fever, cough and other symptoms. 2. Sinusitis: when a baby suffers from sinusitis, there will be secretions or pus in the sinuses, causing the sinus openings to be blocked and squeezing the surrounding tissues, resulting in conductive headaches. 3. Craniocerebral diseases: such as cerebral vascular malformations, tumors and other headache symptoms can also occur. Baby headache may also have other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor’s treatment.