Cervical spondylosis is one of the common diseases in middle and old people. The cervical spine is stimulated by various factors in long-term life and work, such as wind and cold, trauma, aging, strain and incorrect sleeping and working postures, which can lead to changes in the physiological curvature of the cervical spine and degenerative changes in the intervertebral discs, joints, ligaments and other tissues, stimulating or compressing the cervical nerve roots, spinal cord, vertebral artery and sympathetic nerves in the neck and a series of corresponding symptoms. Since there are many types of cervical spondylosis, the symptoms of different types of cervical spondylosis are different. Only one type of cervical spondylosis, which can cause leg pain, is introduced here. Spinal cord cervical spondylosis refers to the direct compression of the spinal cord due to the backward protrusion of the cervical intervertebral disc, bone spur at the posterior edge of the vertebral body, hypertrophy of the ligamentum flavum, narrowing of the spinal canal and slippage of the vertebral body, or the degeneration and necrosis of the spinal cord caused by sympathetic nerve stimulation and vasospasm of the spinal cord, and the resulting syndrome characterized by limb dysfunction. The spinal cord type of cervical spondylosis is divided into central type and peripheral type, with the onset of the central type starting from the upper extremities and progressing to the lower extremities, and the onset of the peripheral type starting from the lower extremities and progressing to the upper extremities. For this reason, it is easy to see that the peripheral type of spinal cord cervical spondylosis is the root cause of leg pain. Since the spinal cord is bilaterally compressed, its clinical manifestations are mainly slow progressive numbness, coldness, pain and unstable walking, clumsy gait, trembling and weakness of both lower limbs. Some patients complain of a feeling of “stepping on cotton”, head heavy, and shaking. The onset of the disease is often intermittent at the beginning, and the symptoms can be exacerbated by excessive exertion and walking. A few patients feel numbness all over their body when they tilt their head, their legs become weak, and they even fall down. With the development of the disease, the symptoms may gradually intensify and become persistent, manifesting as incomplete spastic paralysis, resulting in bed rest and even breathing difficulties. Bladder and rectal sphincter symptoms are also common, mostly manifesting as urinary urgency, frequency, weakness in urination, weakness in stool, and sexual dysfunction in individual patients. The incidence of spinal cord cervical spondylosis accounts for 10%-15% of all types of cervical spondylosis. Not every case of cervical spondylosis will develop into spinal cord type clinically, and most of the spinal cord type cervical spondylosis is also treatable. However, it is important to prevent falls due to unstable walking during the onset of the disease. Spinal cord cervical spondylosis causes pain in both legs. Based on the three major features of intermittent claudication, inconsistency between complaints and objective examination, limitation of posterior neck extension and pain, the disease can be clearly diagnosed, and CT scan, MRI or myelography can be done in individual cases with difficulty, and it can be clearly understood.