A bone protruding from the forehead is usually referred to as a cranial chondroma, which is usually a benign tumor and is mainly caused by congenital factors or traumatic stimulation. If there are obvious symptoms and the growth rate is fast or affects the beauty, it is better to remove the chondroma from the skull surgically. Bone wax is applied to the wound to stop the bleeding, and the wound is cleaned and sutured with sterile dressing and pressure bandage. However, after the surgery, it is better to go to the CT room again for a cranial CT scan review to avoid intracranial bleeding during the surgery.