A protruding bone on the head is usually a chondroma of the skull, which is formed by external stimuli, trauma, and congenital factors. There are usually no obvious symptoms after the appearance of the tumor, sometimes localized pressure pain is felt when pressing with the hand, but dizziness, headache and other complications do not occur. You can go to the hospital for a CT examination to see the exact location, size, and interaction with the surrounding tissues. Usually, this is a benign tumor. For aesthetic reasons, the tumor can be removed surgically by using a bone groove or bone biting forceps to completely remove the chondroma, then applying bone wax to stop the bleeding, and finally suturing the scalp to place drainage strips to avoid excessive local bruising and infection. After the operation, CT review should be performed to see if there is any intracranial bleeding during the operation. After the operation, oral anti-infective drugs can be taken, and the stitches are usually removed in about 5-7 days.