Carotid artery nodules have more causes, such as aneurysms in the carotid arteries due to degenerative changes in the blood vessels or carotid plaques due to atherosclerosis. Generally, two diagnoses need to be clarified, and if it is due to a huge aneurysm, interventional treatment can be performed. If it is due to atherosclerotic plaque, etc., antiplatelet as well as plaque stabilizing and lipid regulating drugs should be applied promptly to improve the patient’s long-term prognosis. If severe dizziness or headache is caused by carotid artery nodules, or if cerebral infarction has occurred in the past, interventional treatment or carotid endothelial dissection is required. The patient should pay attention to a low-salt, low-fat diet and avoid overexertion, emotional stress and tension.