Sunken cheeks may be related to jaw deformity, natural aging, facial trauma, etc. It can be improved by orthodontic treatment, autologous fat transplantation, hyaluronic acid filler, etc. 1. Jaw development deformity: If the congenital jaw development deformity may cause the two cheeks to be sunken. Orthodontic treatment can be used to correct the upper and lower jaws, thus improving the hollow cheeks. 2. Natural aging or being too thin: As we age, the skin ages and the fat content decreases, which may result in sunken cheeks. In addition, being too thin can also lead to sunken cheeks, which can be improved by autologous fat grafting to fill in the sunken area. 3. Trauma to the face: Trauma to the face may cause facial muscle atrophy and laxity, poor healing of facial bone fractures, etc. This may result in sunken cheeks. It can be improved by filling hyaluronic acid. It is recommended that patients go to the hospital in time, under the guidance of the doctor to standardize the treatment.