Doing many operations at once, such as maxillofacial plastic surgery, requires general anesthesia through nasal intubation. Therefore, it is not suitable for rhinoplasty at the same time. Such as maxillofacial, liposuction and even perineal plastic surgery, will not only prolong the recovery time, but also easily increase the occurrence of complications: infection, hematoma and poor wound healing. The same is true of liposuction. If liposuction is performed on the waist, abdomen, thighs, buttocks and upper limbs at the same time, it will not only easily lead to postoperative acid-base electrolyte disorder, but also increase the probability of fat embolism. Moreover, the anesthesia time is too long, and the risk is multiplied.