There is no standard figure for the normal size of the ears, but a range of 5cm to 8cm is generally considered normal. There are some patients with small ears who do not have any hearing abnormalities and do not need special treatment as long as they do not care about their appearance. If you have a small ear deformity and have a hearing impairment, you will need surgery to correct it. The normal size of the ears is actually related to congenital development, and each person has certain individual differences, just as hands and feet are not always the same size, and each person’s height and weight are different.