All surgeries require anesthesia, except that the type of anesthesia varies depending on the size of the surgery. Common types of anesthesia include local infiltration anesthesia, epidural anesthesia, and general anesthesia. Local infiltration anesthesia is the main form of anesthesia for a variety of minor surgeries. The drug is mostly lidocaine, and local anesthesia is commonly used for minor surgeries such as the incision of boils and carbuncles, and the treatment of onychomycosis. Epidural anesthesia refers to the injection of drugs into the epidural space to control the patient’s level of anesthesia, and currently epidural anesthesia is commonly used in obstetrics for analgesic delivery. General anesthesia refers to the way of intravenous drug administration and inhalation drug administration to make the patient enter the state of anesthesia. It is also the most commonly used method for various major surgeries.