The 14-year-old boy always headache may be related to craniocerebral diseases, sinusitis, migraine and so on. 1. Craniocerebral diseases: such as intracranial hemorrhage, brain tumors and other craniocerebral diseases will have headache symptoms. 2. Sinusitis: Sinusitis can cause blockage of the sinus opening due to edema of the nasal mucosa, resulting in tension headache, severe nasal congestion, which also affects the supply of blood and oxygen to the brain, causing headache symptoms. 3. Migraine: children’s migraine is generally due to genetic abnormalities caused by neurons, in the external stimulus increased excitability, vasoconstriction and diastolic dysfunction, causing unilateral or bilateral migraine. The 14-year-old boy always headache, there may be 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.