There are two raised bones on the forehead, often related to the following reasons: 1, may be some normal bony protrusions. In the human forehead, under the skin is the frontal bone, and the bone on both sides of the hairline angle, there are two obvious bony protrusions, is physiological, all people have, only some people are more obvious, some people are not obvious. In some thinner patients, this part is very obvious. 2, there may be localized bony proliferation. If there is a bone cyst, you will see a swelling protruding from the skin in the forehead and the brow bone. 3. There may be a square skull, often due to malnutrition leading to rickets, or congenital syphilis, which then leads to a bony deformity here. If the patient does not know which factor is responsible for the current situation, then it is recommended that the patient can visit an orthopedic clinic and ask the doctor to help determine.