There are two pathogenic factors of Alzheimer's disease: one is cerebrovascular circulation disorder; Second, the aging of brain cells is accelerating. Coenzyme Q 10 can promote the regeneration of vascular endothelial cells, prevent plaque and hypertension, increase the oxygen carrying capacity of cells, greatly improve the blood circulation between cerebral arterioles and venules, and avoid local brain tissue necrosis due to ischemia and hypoxia. Coenzyme Q 10 is called "cell power plant", which supplies energy and participates in all biochemical reactions. Without coenzyme Q 10, the aging of brain cells will be aggravated. Proper intake of coenzyme Q 10 can enhance memory, logical thinking ability, sense of position and motor coordination ability, thus achieving the purpose of preventing Alzheimer's disease.