The primary concern of all plastic surgery patients is the safety of the procedure. All surgery has risks. Mature surgery is like flying in an airplane, there is some risk, but it is minimal. A well-managed airline with qualified and experienced captains and pilots and good aircraft condition is very safe. By the same token, zygomatic arch jaw angle are very safe surgeries. Qualified and experienced surgeons with a scientific background, the surgery is very safe, and even if there is an occasional small probability of complications, it is recoverable. The main reason why there are many plastic surgery accidents in China is that our country’s management system is not perfect, and there are many doctors who are not qualified enough to do plastic surgery, and many of them are not even doctors. So there are a lot of problems, and failed cases are often the most newsworthy, so the network is filled with a lot of plastic surgery negative news of all kinds. The cheekbone and zygomatic arch surgery takes about two hours, and the bleeding is about 50ml (400ml for a blood donation and about 100ml for a menstrual period). The jaw angle surgery takes more than an hour to complete, and most of the bleeding is below 50ml, and a small amount is between 50-100ml. in so there is basically no effect on the body. The swelling will basically go down in a week or so after the surgery. Safety measures taken for plastic surgery: 1. Strict preoperative examination to exclude patients whose physical condition is not suitable for surgery. 2, Pre-operative 3D CT and plane CT to exclude skeletal abnormalities, and thorough surgical design before surgery. 3.Cooperation with only familiar and high level anesthesiologists. 4. Use the highest quality and smoothest surgical instruments during surgery. Protect the soft and hard tissues as much as possible during the operation for the fastest recovery. 5.Good postoperative care and observation of the patient.