Cup-shaped ear is a congenital malformation of the ear, accounting for about 10% of all congenital ear malformations. It is more common to be bilateral, but not necessarily symmetrical. Cupped ears are characterized by a curled auricle, which in mild cases is just a fold of the auricle itself, and in severe cases, the entire upper part of the auricle hangs down and covers the opening of the ear canal. The low position of the auricle is more obvious in severe cases, and is often accompanied by maxillofacial deformities. Cupped ears are formed after birth in fewer cases, for the treatment of cupped ears is also the use of surgical correction. There are many causes of cup-shaped ears, mostly due to maternal influence, the specific causes are described below: Causes: It is generally believed that abnormal events in the early stages of pregnancy such as viral infections, medication, mental stimulation, etc., or experience of radiation, environmental pollution, etc. can cause. However, current research suggests that no single factor plays a dominant role. Current research suggests that cupped ears are a randomized, distributed event, and that parents must understand that the malformation is not caused by something in the mother before or during pregnancy. The recurrence rate among relatives is only 5%, which means that it is essentially not hereditary.