The causes of cervical spondylosis are actually of two types. The first type is intrinsic causes, which refer to the degeneration of the cervical intervertebral disc, a physiological process. Starting from the age of 20, the cervical intervertebral disc begins to degenerate, varying from person to person; some degenerate faster, others slower. However, as one ages, the cervical discs also gradually deteriorate. The second cause is the pathological changes secondary to the degeneration of the cervical intervertebral discs. For instance, after the discs degenerate, it can lead to instability of the cervical spine, formation of osteophytes around it, calcification of ligaments, and instability of small joints, among others. Due to these reasons, it results in a series of pathological changes affecting nearby soft tissues, such as blood vessels, nerves, spinal cord, and sympathetic nerves. This is the definition of cervical spondylosis. Thus, the causes of cervical spondylosis boil down to two main points: first, the degeneration of the cervical intervertebral discs; second, due to this degeneration, it induces other pathological changes such as the formation of peripheral osteophytes, ligament calcification, joint instability, etc., ultimately compressing the surrounding soft tissues, leading to cervical spondylosis.