The causes of itchy ear roots include local allergic factors, fungal infections of the ear canal and inflammatory diseases of the ear canal, as follows: First, local allergic factors: clinically, there are common auricular or ear canal eczema, which can cause patients to have itchy ear roots. In addition to itching, this condition may have the manifestation of local yellow water flow. Local application of anti-allergic ointment or systemic oral anti-allergic drug treatment is effective. Secondly, fungal infection of the ear canal: this condition is manifested as dry itching, and clinically there may be the performance of fungal mycelium growth locally in the ear canal. Fungal infection can be clarified by doing fungal smear examination of ear canal secretions. Third, inflammatory diseases of the ear canal: some patients have chronic otitis externa, cerumen infection of the ear canal, which can induce the appearance of ear itch. In this case, after removing the ear canal cerumen, the performance of ear prickly itch may disappear. Therefore, there are more causes of ear itch, and patients need to go to the ENT department for examination to see which one they belong to and to carry out targeted treatment in order to relieve the performance of ear itch.