Itchy outer ear contour is an abnormal symptom, it is recommended that the patient had better go to the regular hospital to check first, which may be the manifestation of certain diseases, such as eczema of the outer ear, ear frostbite, atopic dermatitis and so on. 1. Eczema of the outer ear: itchy skin centered on the auricle is common, and can extend to the external auditory canal mouth and the skin around the auricle, in addition to itching in the early stage, there is often a burning skin or moist feeling of discomfort. 2. Ear frostbite: generally occurs in the auricle, mostly seen in the cold season in the northern cold regions, the initial stage of the auricle skin is often mild itching, burning sensation, inspection of the local skin can be seen in cyanosis, swelling, and later on the auricle can appear pain and discomfort. 3. Atopic dermatitis: related to genetic, environmental, biological and other factors, can be manifested as auricular skin pimples, blisters and flushing and other signs. As this symptom alone can not determine the disease, and do not rule out other factors. It is recommended that the patient consult a doctor in a timely manner to clarify the cause of the disease and give targeted treatment.