Most middle-aged and elderly patients with cervical vertigo are diagnosed as “vertebrobasilar artery insufficiency” or “vertebral artery cervical spondylosis” after routine examination in hospitals. Doctors usually give medications to dilate blood vessels and improve blood circulation, but most cervical vertigo patients have difficulty in improving their symptoms completely, and the symptoms will attack or worsen when they are slightly tired or undergo climate change. If you suffer from cervical vertigo for a long time, the degeneration of the brain will be accelerated due to insufficient blood supply to the vertebrobasilar artery, so cervical vertigo is a common clinical disease and difficult to treat. Then why is cervical vertigo a common and difficult clinical disease? There are many factors for cervical vertigo to occur, but the main reason is the unbalanced position between the first and second cervical vertebrae – modern medicine calls it atlantoaxial instability, which squeezes and stimulates the cervical vertebral artery and cervical nerve, causing vertigo, headache, nausea, vomiting and other vertebrobasilar artery blood supply. Inadequate blood supply to the vertebrobasilar artery and symptoms of plant nerve dysfunction. There are seven cervical vertebrae, the lower five of which are similar in appearance and function, while the top two have their own characteristics in appearance and function. The first cervical vertebra has a ring-like appearance and is medically called the atlantoaxial vertebra; the second cervical vertebra has a pivot-like protrusion at its front end and is medically called the pivot vertebra. The cooperation of the atlantoaxial vertebrae is the main joint that forms the rotational movement of the neck. The cervical vertebral artery is interposed in the transverse foramina on both sides of all cervical vertebrae above the sixth cervical vertebra and enters the skull from above the atlas through the foramen magnum of the occipital bone, becoming part of the vertebrobasilar artery. The entire vertebral artery forms six physiological bends with the transverse foramen bony channel during its upward movement, four of which are concentrated between the atlantoaxial vertebrae and the foramen magnum of the occipital bone, so the stability of the position of the atlantoaxial vertebrae can maintain the unobstructed flow of the cervical vertebral artery. Rotational activity of the atlantoaxial spine is accomplished by the contraction of several groups of muscles attached to both sides of the atlantoaxial spine. There are many rotational activities of the neck in a person’s life, and most of the rotational activities of the neck are asymmetrical, so those who work more are easily damaged. Muscle contracture can occur after muscle strain, and asymmetric muscle contracture can make the atlantoaxial spine unbalanced, resulting in displacement of the atlantoaxial spine from one another and pathological results of atlantoaxial instability. There are various forms of atlantoaxial instability, the most common of which is atlantoaxial rotational displacement. The above physiological and pathological changes in the cervical spine are a natural law. The age of onset of cervical vertigo caused by atlantoaxial instability is becoming younger because of the multiplication of desk-bound time in modern people. Therefore, the phenomenon of atlantoaxial instability is very common in the population. Because atlantoaxial instability is a gradual formation and aggravation process, there is no obvious discomfort in the early stage because of the compensatory function of human body, but after the human body loses compensation, cervical vertigo symptoms such as vertigo, headache, nausea, drowsiness and tinnitus will appear frequently. According to the research data, more than 70% of dizziness with unknown causes are related to atlantoaxial instability, and most clinicians do not know much about atlantoaxial instability, and drug treatment cannot correct the displacement between atlantoaxial vertebrae in any way. About the treatment of atlantoaxial instability. In Chinese medicine, orthopedic manipulation has been used to understand the various conditions of cervical spine displacement through the hands of experienced orthopedists, and then correct the displacement between the atlantoaxial vertebrae with the corresponding orthopedic manipulation, but this special technique needs to be passed down from master to apprentice to master, otherwise it will cause significant danger to the patient. Because orthopedic manipulation cannot eliminate the intrinsic long-term muscle contracture pathology, the atlantoaxial spine can be repeatedly displaced after simple manipulation and may gradually worsen over time. Patients with severe atlantoaxial rotational displacement must be internally fixed by modern medical surgery using wires, lamellar clips, screws, etc. The patient is subjected to greater risk and long-term physical inconvenience during treatment, so it is important and positive to study and eliminate the pathological mechanisms that cause rotational displacement of the atlantoaxial spine and cure the disease at an early stage.