Possible causes of sunken forehead include congenital dysplasia, traumatic wounds, fractures, tumors, etc. Surgery, medical aesthetics, radiation and other treatments can help to improve the situation. 1. Congenital dysplasia: If a patient has congenital dysplasia of the frontal bone, it will lead to a sunken forehead. This kind of patients can be helped by frontal bone osteotomy to improve the depression; for the forehead muscle and fat tissue dysplasia caused by forehead depression, can be through the autologous fat injection, hyaluronic acid injection and other medical aesthetic methods to help fill the forehead depression. 2. Traumatic wounds: the skin and muscle tissues of the forehead may atrophy after being traumatized, and the local fat tissues may liquefy, thus leading to forehead depression. This kind of patients can be injected with hyaluronic acid and other filler materials to help improve forehead depression. 3. Fracture: For forehead depression caused by frontal bone fracture, it is necessary to help improve the depression through surgical reset; for patients with comminuted fracture of forehead, it is also necessary to use titanium mesh and other materials to fill in locally. 4. Tumor: If intracranial tumor patients have tumor invading the bone or periosteum of frontal bone, or the tumor pulling the surrounding tissues, etc., it will lead to forehead depression. At this time, according to the examination results and patient’s condition, surgical resection, radiation therapy and other methods can be used to help eliminate the tumor, and then improve the forehead concavity. There may be other reasons for the sunken forehead, so it is recommended that the patient should consult a doctor in time.