The biggest advantage of this kind of operation is that there is no scar and no trace after operation. However, the difficulty of three-dimensional osteotomy of zygomatic bone is greatly increased, which is suitable for patients with prominent zygomatic arch. In addition to intraoral incision, it is usually necessary to make an auxiliary incision in the shadow part of hairline, or make a coronal incision in the scalp alone. After the whole zygomatic bone is separated and exposed under the periosteum, it is necessary to cut off the bone blocks with a specific size according to the computer three-dimensional simulation design, and then reconnect and shape the separated bone blocks with additional materials such as titanium nails, so that the whole facial contour and face shape can be changed to the maximum extent, and even the patient can achieve the effect of thoroughly remoulding himself.