The apple muscle is located on the cheek face and is the more prominent part of the midface, named because of its resemblance to an apple. As we age, the soft tissues of the face will shift downward by gravity, resulting in a downward shift of the facial highlight point. Visually, the upper and middle face will appear to have insufficient tissue, the lower facial contour becomes unclear, and people appear to be aging and tired, while autologous fat injection into the apple muscle can improve the downward shift of the highlight point and help make the face appear younger. Autologous fat filler surgery is a procedure often done in the clinic nowadays, the surgery is safe and the risks are relatively small, the main risks include the following: 1. Infection: it may be due to improper care during or after surgery, there is bacterial contamination, the tissue forms redness or abscess, the doctor should give appropriate anti-inflammatory disposal after surgery; 2. Hematoma: the injection during surgery will have a small amount of damage to the blood vessels, causing a small amount of bleeding and forming bruises The hematoma can be absorbed by itself after surgery. However, if there is more bleeding, a local hematoma may be formed; 3, embolism: the most serious risk of autologous fat filling surgery is that the fat enters the blood vessels to form an embolism, which may cause tissue necrosis, but the chance of this happening is very low; 4, nerve damage (facial nerve), which is generally very rare; 5, local masses, resulting in the formation of uneven skin; 6, poor postoperative results: if you want to do autologous fat grafting , the most important thing to consider is the form of the problem, because after this kind of surgery may feel that the amount of fat filling is not well grasped, less or more, which can happen. If the amount of filler is relatively small, it can be injected again after the shape is stabilized. If the amount of filling is excessive, for the face, it may feel like you broke your face, and you can do facial liposuction again to adjust it.