Cervical spine asymmetry can be caused by many reasons. If the whole body does not remain in a neutral position during self-observation, it can manifest itself differently on both sides. In addition, if the muscles around the cervical spine are strained and damaged, the whole cervical spine muscle spasm and pain, because painful stimulation is a person’s self-protection, so it will be like the painful side is obviously shifted. If the cervical bones themselves have deformed changes, scoliosis and other conditions can also cause asymmetry on both sides of the cervical spine. There are also congenital diseases, especially congenital myotonic neck is also the cause of asymmetry of the cervical spine, which is more common in children, mainly because of scarring and fibrosis of the sternocleidomastoid muscle. So if there is a significant asymmetry, it is best not to observe it yourself, but to go to the hospital to determine the specific treatment by the doctor after observation.