There are seven normal adult cervical vertebrae, from top to bottom, the atlas and the cardinal vertebrae, which are the first and second cervical vertebrae. At the bottom is the seventh cervical vertebra, also known as the major vertebra. The spinous process of the seventh cervical vertebra is relatively high, and the highest point is the spinous process of the seventh cervical vertebra when a person touches it with his or her hand when lowering the head, which is usually used as a specific anatomical marker in clinical practice to determine the specific location of the cervical vertebra. There are intervertebral discs connected between each two cervical vertebrae, and the cervical vertebrae themselves cannot move, but the reason why the human cervical vertebrae can move forward and backward, and rotate left and right, is mainly because there are intervertebral discs connected between the cervical vertebrae, and the intervertebral discs have certain toughness and can flex and extend backward and forward. However, prolonged head bowing or strenuous exercise may lead to degeneration or injury of the cervical discs, and the protruding discs will stimulate the surrounding blood vessels and nerves, leading to a series of clinical symptoms, which are usually referred to as cervical spondylosis. Because the cervical spine is more mobile, it must be protected from cervical disc degeneration or protrusion in everyday life.