External ear reconstruction is generally a repair and treatment operation for congenital ear malformation or ear defect caused by external reasons.

Total auricle reconstruction includes the high technical difficulty of plastic surgery, and the difficulty lies in the cutting of skin flap, fascia flap, costal cartilage, carving of cartilage scaffold and skin grafting. A realistic auricle needs to be thin and smart, close to normal ears, and also needs a realistic three-dimensional sense.