Both microtia and cupped ear are congenital ear deformities, and the causative factors are directly related to the mother and, according to genetic tests, are autosomal dominant. When treating cup ear, it is important to differentiate it from microtia and microtia. The following is the differential diagnosis between microtia and cup ear: microtia: one of the common malformations of the ear in newborns, with a male to female ratio of 2:1. The main manifestation is a change in the shape of the auricle, with the basic structure of the outer ear disappearing or partially disappearing, with only part of the cartilage and earlobe remaining, or in severe cases, no structure at all. In addition to the deformity of the auricle, this type of patient is often associated with ipsilateral facial dysplasia, hearing loss, and even serious malformations of the heart and urinary system. Cup-shaped ear: It is a congenital deformity between the ear of the wind and the small ear. The main manifestation is the curling of the auricle, which in mild cases is just the folding of the ear chakra itself, and in severe cases, the whole auricle hangs down and covers the opening of the ear canal; the auricle tilts forward, which is also known as the wind ear, but it is different from the simple wind ear deformity; the auricle becomes smaller, mainly the length of the auricle becomes shorter; the position of the auricle is low, which is more obvious in severe cases, and is often accompanied by jaw and face deformities.