The protruding bones in front of the neck may be caused by the following reasons: 1. It may be caused by normal bony protrusions, for example, there are normal bony protrusions such as thyroid cartilage and cricoid cartilage in the front of the neck itself. If the patient is thin, or does the head backward movement, it will make this kind of bony protrusion become more obvious, this situation is a physiological state. 2, may be caused by the spinal deformity, such as the patient exists scoliosis, or due to serious cervical spine injury, resulting in the bony deformity of the cervical spine, it may cause the normal bony protrusion of the front of the neck, become more obvious. 3, due to the neck For example, if the patient has an oblique neck, the sternocleidomastoid muscle on one side may be in continuous spasm, and the spastic muscle is often hard, which may cause the patient to mistake it for a bony protrusion. 4. The bony prominence in the front of the neck may be caused by calcification in the thyroid gland, or by a serious injury to the neck, resulting in an injury to the muscles in the front of the neck.