Headache is divided into primary headache and secondary headache.1. Headache caused by ear generally belongs to secondary headache, and the pain-sensitive structure of head includes adjacent organs such as orbit, orbital contents, outer ear, middle ear, nasal cavity and sinus, in addition to scalp, subcutaneous tissue, periosteum, blood vessels and muscles of head and neck. 2. The most common cause is otitis media. Otitis media is a purulent inflammation involving the middle ear. The most prominent clinical manifestation of patients is pus flowing from the external ear canal, and patients are also often accompanied by fever and pain in the external ear canal on examination. In addition to pain relief and symptomatic treatment, antibiotics and ear drops should be administered.