High diastolic blood pressure is not a food that can not be touched, hypertension patients have no obvious dietary contraindications, but to pay attention to low-salt, low-fat food. Elevated diastolic blood pressure also belongs to a kind of high blood pressure, high blood pressure patients should be appropriate control of diet, but there is no strict dietary taboos, there is no food that can not be touched, but usually life to low-salt, low-fat food. Patients with high blood pressure should strictly limit the intake of salt, daily salt intake should be controlled within 5g, excessive intake of salt will increase blood volume, resulting in increased blood pressure levels, increasing the difficulty of blood pressure treatment. Patients with high blood pressure should also limit the intake of high-fat foods. Excessive intake of fat may lead to weight gain, which may indirectly increase blood pressure levels. High-fat foods can also increase blood lipid levels and promote the progression of atherosclerosis. Patients with high blood pressure should adopt a scientific and rational approach to treatment, and should formulate a treatment plan under the guidance of a physician.