Swelling after hyaluronic acid injection can be treated by local cold compresses, hyaluronic acid dissolving enzyme injections and the use of antibacterial and anti-inflammatory drugs. Hyaluronic acid injection is an invasive deep operation, the treatment process will inevitably damage some blood vessels resulting in local hematoma and pain and other symptoms. When the symptoms are mild, it is generally a normal physiological phenomenon, at this time can be treated by local cold compresses, such as ice packs or wet towels on the swollen parts of the skin to deal with cold compresses. If there is still localized swelling after hyaluronic acid injection for a longer period of time, hyaluronidase can be injected to improve the bad appearance. After the injection of hyaluronic acid localized swelling and with obvious redness, heat, pain and other symptoms of infection, this time can be oral antibiotics for treatment, common such as amoxicillin capsules, metronidazole and cefoperazone, etc., whose main effect is to alleviate the symptoms of localized swelling, anti-bacterial and anti-infective treatment. When the swelling is serious, incision and drainage or placement of drainage tubes are also required. If the local skin swelling after injection of hyaluronic acid, you should go to the regular medical institutions in time to seek medical treatment, not unauthorized use of medication, so as not to delay the condition.