Most plastic surgery does not require muscle relaxation, and it is not necessary to deepen anesthesia when sewing wounds, so this anesthesia is appropriate. The coverage of anesthesia equipment is eliminated, which is beneficial to the operation of the operating field and brings convenience to the operator. Its disadvantage is that the patient's respiratory tract is difficult to manage, narcotic analgesics can inhibit natural breathing, and microcirculation expands during operation, resulting in more bleeding on the wound surface.