There are many causes of sunken cheeks, and the first thing to determine is whether it is caused by the upper and lower jaws, especially the upper jaw, which, when underdeveloped, often results in what we commonly refer to as “geodesic”, giving the appearance of a sunken midface. In childhood, the deformity can be corrected through orthodontic treatment, while in adults, orthognathic surgery is often chosen to move the upper jaw forward. If the sunken cheeks are only caused by soft tissue problems, you can transplant your own tissue or fill in biological materials to correct the sunken cheek deformity, commonly used are autologous fat particles injection and hyaluronic acid filler. Autologous fat comes from the abdomen, thighs, and buttocks, and can be used for shaping the donor area while turning it into a treasure. The effect is long-lasting and natural after implantation, and because it is autologous tissue, it is safe and free of rejection after implantation. However, the survival rate of the transplanted fat may be affected due to the difference in body quality, so if you want to achieve better results, you will need to fill it several times. In addition, hyaluronic acid injection is widely used and has good safety. Moreover, since hyaluronic acid can be metabolized and absorbed by the body, it can be repeatedly injected.