Itchy outer contour of the auricle is clinically more common disease is auricular eczema, which is a kind of allergic disease, mainly eating allergic food or auricular contact with allergic substances, inducing auricular allergic disease, it is recommended that patients go to dermatology or otorhinolaryngology for examination and treatment. The clinical manifestations are localized itching of the auricle, frequent scratching of the ear, yellowish exudate on the surface of the auricle, and even localized infection. Clinical examination reveals localized redness and swelling of the auricle, exudate on the surface of the auricle, and localized fissures. With repeated eczema infections, the auricular skin will thicken and local changes such as flaking will occur. Clinical treatment can be a combination of anti-allergic ointments and oral antihistamines under the guidance of a doctor.