South Korean plastic surgery experts said that the water-drop prosthesis is not perfect. Both the circular prosthesis and the water-drop prosthesis have their own advantages and disadvantages, but the water-drop prosthesis can make up for the problems that the circular prosthesis is difficult to solve and can shape a more natural chest. In the past, smooth breast augmentation with prosthesis required postoperative massage and blood bag insertion, which took a long time to recover. If the postoperative massage and management are neglected, it will lead to side effects such as chest contracture and sclerosis, and breast augmentation with water drop prosthesis can greatly shorten the recovery time and reduce side effects. 2. For women with a short distance from nipple to inframammary fold, placing a circular prosthesis in the chest with a short distance from nipple to inframammary fold often leads to the situation that the chest bulges upward or has two sides, so a smaller prosthesis will be selected during the operation, but the size of the chest is not satisfied after the operation. The use of water drop prosthesis can reduce the situation of upper drum and fully enhance the fullness under nipple. 3. Generally, the distance from the center of clavicle to nipple is 18~22cm for women with relatively high chest position. If the chest position is too high, the waist will look very long, but after placing a circular prosthesis, the chest bulge will be more serious and the waist will be longer visually. The use of water-drop prosthesis can coordinate the overall proportion, increase fullness and make up for the deficiency of circular prosthesis. 4. Re-operative female drop-shaped prosthesis is mainly used to correct unnatural chest after placing round prosthesis. After breast augmentation with smooth prosthesis, contracture and sclerosis are more serious. When you want to change the rough prosthesis, use a water drop prosthesis to make the chest more natural and full.