If hyaluronic acid is injected for filling, patients will usually have obvious swelling, localized edema, hard lumps and other symptoms within 1-2 days after injection. The swelling gradually subsides from the 3rd day, and usually the swelling can be basically eliminated in about 7 days. In the early stage of hyaluronic acid swelling, ice packs can be used to reduce swelling and local oozing, oozing, or oral medication under the guidance of the doctor to relieve. After 3 days of injection, local hot compresses can be used to promote the absorption of edema. In addition, patients should pay more attention to rest, eat a light diet, eat more high-protein food, eat less spicy, fried, seafood and other foods, so as to avoid allergies, which in turn aggravate edema. Meanwhile, care should be taken not to rub the injection site to avoid affecting the absorption of edema and hematoma. If the injection of hyaluronic acid is to fill the wrinkles, patients should not take aspirin and other drugs that activate blood stasis after the operation, so as not to affect the effect of hyaluronic acid. Hyaluronic acid itself can be absorbed by the body tissue itself, whether it is for filling, rhinoplasty, shaping, or wrinkle treatment, the general efficacy can only be maintained for a period of 6-12 months. After this period of time, repeated injections are needed to maintain a better filler or wrinkle removal effect.