The causes of low blood pressure and high pressure are categorized into primary hypertension and secondary hypertension, to control the blood pressure level through lifestyle adjustment and medication, and secondary hypertension has the treatment of primary disease. 1. Etiology: patients with high blood pressure are most common for primary hypertension, the cause of which is not clear, and may be related to genetic factors, environmental factors, poor dietary habits, etc. Secondary hypertension have clear causes, such as nephrotic syndrome, renal artery stenosis, adrenal gland diseases, etc. 2. Treatment: Both primary and secondary hypertension should be controlled by lifestyle, maintaining a happy mood, getting enough sleep, limiting salt intake, and exercising appropriately. If necessary, under the guidance of the physician to give drug treatment, oral amlodipine, valsartan and other drugs, specific treatment program to follow the doctor’s instructions. Secondary hypertension should also treat the primary disease, such as pheochromocytoma can be surgically treated. After the discovery of elevated blood pressure, patients should go to the hospital in time to prevent the aggravation of the condition.