The most common type of cosmetic nose surgery is rhinoplasty with implant placement. After the implant is placed, the nose will immediately change from its previous flat and concave appearance to a three-dimensional and abrupt aesthetic appearance. However, the placement of the prosthesis brings beauty and at the same time, it also lays a lifelong safety hazard. At present, the commonly used materials for rhinoplasty are mainly silicone and tumescent. Although these two materials have good physical and chemical stability and safety, they will always be foreign to the human body after being placed in the body, and it is likely that infection, discharge and other problems will occur. So, how to minimize these problems? This requires the surgeon to do the appropriate addition and subtraction during the surgery. The essence of rhinoplasty is to replace the underdeveloped tissue of the nose with a prosthesis. In order to achieve the desired cosmetic effect, a certain volume and thickness of the implant needs to be inserted. The increase in volume and thickness is an additive process, and for some patients, the greater the result of the addition, the better the rhinoplasty result may be. Therefore, patients often ask the surgeon to make the nose taller, i.e., they ask for a large addition. However, the size and thickness of the implant to be placed should be considered both in the context of a thorough facial aesthetic analysis and the skin of the nose. For an individual, the elasticity and laxity of the nasal skin is certain and this elasticity and laxity determines the size and thickness of the implant that can be placed in the deeper part of the nose. Beyond this limit, the skin will be overwhelmed by the tension formed after the placement of the prosthesis and lesions will occur. Moreover, even if the placement of the prosthesis does not exceed the local skin tolerance limit, because the prosthesis is after all a foreign body in the human body, it will still cause abnormal changes in the skin and surrounding tissues under certain circumstances, which will also increase the risk of skin breakdown. Therefore, from the safety point of view, the surgeon will also subtract when rhinoplasty. The smaller and thinner the implant placed, the safer the rhinoplasty will be. A good surgeon will not only be able to make a beautiful nose, but this beautiful nose should also be a safe nose that will stay with the patient for the rest of his or her life. This requires the surgeon to carefully weigh the additions and subtractions during the surgery, to know what to add and what to subtract, to find an optimal fit in the addition and subtraction, and to give the patient a nose that is both beautiful and safe.