For surgical procedures such as liposculpture and fat grafting, local anesthesia (including local infiltration anesthesia and nerve block anesthesia) or general anesthesia is usually chosen. For liposculpture, local anesthesia, i.e., local swelling anesthesia, can be considered if the candidate is in good health, in good state of mind, has had such surgery in the past and can tolerate it well, and the volume of suction is less than 2,000 milliliters. Good anesthesia can be achieved after a period of time by instilling a large amount of low-concentration compound anesthetic drug in the fat cell interstitial space. Due to the large total amount of anesthetic drugs, good intraoperative and postoperative close observation is still recommended. There will still be a certain degree of swelling and pain when the anesthetic drugs are injected. In case of too many suction sites, or the total amount of planned suction is large, nerve block anesthesia, including epidural anesthesia, lumbar anesthesia or brachial plexus anesthesia and other peripheral dermal nerve block anesthesia, can be chosen to achieve good pain relief. However, only this single type of anesthesia cannot achieve the effect of local injection of low concentration of anesthetic drugs, i.e. swelling anesthesia. Therefore, local injection of swelling solution is still needed when taking nerve block anesthesia. At this time, the drug concentration of the swelling liquid should be reduced, and even the local anesthetic drug can not be used, but only the liquid to play a swelling effect. General anesthesia can be used for those patients with preoperative fear, many suction sites and huge suction volume of liposuction for weight loss and shaping. At this time, under the action of anesthesia drugs, the patient is in a similar “sleep” state, no reaction to pain; at the same time in the suction of local anesthesia should also be used in low concentration of anesthetic swelling anesthesia technology to ensure the efficiency and safety of suction. At this time, general anesthesia requires professional anesthesiologists to operate and monitor the whole process; moreover, before the surgery, it is also necessary to prohibit food and water and do a comprehensive examination to ensure that the anesthesia is carried out smoothly. For fat grafting, local anesthesia can be considered for facial fat grafting; while general anesthesia is often used for breast fat grafting due to the large amount of liposuction, long duration, and deeper and different levels of injections in the breasts. Of course, local anesthesia is also a good choice for some strong patients who can tolerate a certain degree of pain. After all, it can avoid the risk of general anesthesia, and the postoperative reaction is mild, and the price is relatively inexpensive.