The so-called “health care products” are clearly defined in China, that is, foods with specific health care functions, which are suitable for consumption by specific groups of people and have the function of regulating the body, not for the purpose of treating diseases. Some health supplements can enhance the immunity of the body, resist viruses and other attacks on the human body, and even prevent cancer when taken for a long time. But we should know clearly that health supplements are not medicines, and they cannot replace medicines to prevent and treat diseases. Cerebrovascular disease is a group of diseases caused by vascular lesions in the brain, resulting in impaired blood circulation in the skull and causing damage to brain tissue. The risk factors of cerebrovascular disease are divided into two categories: intervenable and non-intervenable. Interventional factors include hypertension, smoking, diabetes, atrial fibrillation and other heart diseases, dyslipidemia, carotid stenosis, sickle cell disease, postmenopausal hormone therapy, poor dietary habits, lack of physical activity and obesity, etc. Non-interventional factors include age, gender, race, and family history of cardiovascular and cerebrovascular diseases. The prevention of cerebrovascular disease should be based on active control of the above-mentioned intervenable risk factors. In this sense, health care products that can improve the above-mentioned interferable risk factors are beneficial to patients with cerebrovascular disease. For example, deep-sea fish oil has a certain role in controlling and reducing dyslipidemia, but it can only be used as an effective supplement to lipid-regulating drugs and can never replace drug therapy. And the related lipid and other indicators involved should be reviewed regularly to determine its effectiveness. In conclusion, there is no evidence-based medical evidence on the prevention and treatment of cerebrovascular disease for a large number of health supplements that are widely popular and used in the market, so patients can buy and use them according to their own needs and financial strength, but they should not believe in the propaganda of businessmen.