Hypertension is a common chronic disease, the causes are very many, its dietary principles are as follows: 1, must limit the intake of sodium, daily salt intake can not exceed 6g, which is very important; 2, to limit fat intake, hypertension patients many combined with high blood pressure, high blood sugar, in the intake of fat, we should try to choose unsaturated fatty acids to replace saturated fatty acids, as far as possible to consume vegetable oils; 3, in protein 3, in terms of protein intake, try to eat low-fat animal protein and vegetable soy protein, which can reduce cholesterol levels, while reducing the risk of cardiovascular disease; 4, hypertensive patients is very important is to consume more potassium and calcium-rich foods in the diet, namely fresh vegetables and fruits, fruits such as bananas, durian, vegetables such as shiitake mushrooms, fungus, asparagus, purple cabbage, all of which are rich in potassium. Asparagus, purple cabbage, are very good sources of potassium. Sources of calcium are mainly milk, beans, and shrimp, shrimp and sesame seeds, etc. The intake of foods high in potassium and calcium is very important for patients with hypertension because potassium ions can directly bring down blood pressure, while calcium ions can cause blood pressure to fall by diastaging the smooth muscle of blood vessels.