There are definitely risks associated with bone grinding, which mainly refers to grinding the cheekbones and jaw angles. Because of the high risk, the Ministry of Health has clearly stipulated that the surgery is a level 4 surgery, which is generally required to be performed in a tertiary hospital, and also needs to be carried out by a senior doctor, and the operating room must be equipped with complete auxiliary equipment and resuscitation equipment in order to ensure the safety of the surgery. The main risk of bone grinding is postoperative bleeding, and intraoperative damage to the nerves may cause facial paralysis, facial numbness and other problems. Therefore, the risk of bone grinding surgery is greater, it is recommended to choose a more formal comprehensive tertiary hospitals for surgery, improve a variety of pre-operative examinations, as well as the current three-dimensional imaging, to determine the development of bones, can reduce the risk of surgery and reduce complications.