Diet is very closely related to cerebrovascular disease. Excessive consumption of fatty, sweet and thick taste can cause sudden stroke and hemiplegia. As we all know, the main components in food are sugar, fat, protein, inorganic salt and vitamin, which are all related to cerebrovascular disease. Such as sugar in food is mainly carbohydrates, excessive intake of food containing sugar, can be converted into triacylglycerols in the body, so that the blood lipids rise, long-term high blood lipids, can cause hypertension, atherosclerosis, which should be limited. Soy products, milk, freshwater fish, etc., containing low cholesterol, can be appropriate to eat more. Salt is indispensable in people’s lives, but if the diet contains high levels of salt, it is easy to cause { blood pressure, which in turn leads to cerebrovascular disease. It is reported that people in the Hokkaido region of Japan have a considerable intake of salt, 15 to 20 grams per day, 84% of adults suffer from hypertension, and the incidence of cerebrovascular disease is also high. In China, a population survey was conducted in some areas in the north, and there is a similar situation. Therefore, attention should be paid to limiting salt intake in the diet, it is appropriate to drop to less than 6 grams per day, of course, the ideal amount is to maintain about 5 grams, and those who have a heavy mouth, more attention should be paid to limit. Protein diet can slow down the process of blood vessel wall elasticity decay, improve the central nervous system’s regulation of blood pressure, lower blood pressure, and promote sodium ion excretion from the urine, thus reducing the incidence of cerebrovascular disease. Therefore, there is no need to restrict the protein diet too much. In short, we should arrange the diet scientifically and reasonably in order to effectively prevent the occurrence of cerebrovascular diseases.