Carotid spondylosis does not usually cause carotid atherosclerosis. Causes of carotid atherosclerosis mainly include hypertension, diabetes, hyperlipidemia and other metabolic diseases, and its influencing factors include smoking, alcohol consumption, obesity, hyperuricemia, high homocysteine, bad habits, etc. Carotid artery ultrasound can be clearly diagnosed. Carotid spondylosis is mainly caused by degenerative changes in the cervical vertebrae, which is influenced by bad habits such as prolonged head-down, desk work, etc. Clinical symptoms include neck and shoulder pain and discomfort, numbness and pain in the upper limbs, dizziness, etc., which generally does not cause carotid atherosclerosis. If carotid artery atherosclerosis occurs in patients with cervical spondylosis, they should actively cooperate with the doctor to carry out examinations, and after a clear diagnosis, carry out standardized treatment under the guidance of the doctor.