Hyaluronic acid to remove static lines, depending on the depth, level or location of wrinkles, the filling method also differs. Conventional filling levels are divided into deep and superficial layers, the deep layer is mainly above the periosteum and the superficial layer is mainly under the skin or below the muscle. If the wrinkle is very shallow, it needs to be filled to the deep or middle layer of the dermis, and the result is very good. However, as a minimally invasive surgery, the risk cannot be ignored, mainly in the following aspects: 1. After hyaluronic acid injection, the local appearance is not in good shape. The reason for the formation is mainly caused by the insufficient amount of hyaluronic acid injection or too much injection, or uneven injection; secondly, it is caused by local deformation and displacement after the completion of hyaluronic acid injection; 2. Infection: although hyaluronic acid has no toxic side effects on the organism, it is after all a foreign substance, and if it is not operated properly, such as not strictly enforcing aseptic operation, it may cause infection, and this situation requires immediate consultation at the hospital; 3. Local injection of hyaluronic acid will result in lumps or bulges, this situation is usually caused by uneven injection of hyaluronic acid, or the body reacts to hyaluronic acid and wraps it up; 4. The most important thing is skin necrosis, vision loss, brain infarction or even crisis of life caused by embolism.