The clinical significance of the five items of hypertension: 1, blood tests include the determination of blood lipids and blood glucose, elevated blood lipids can lead to vascular sclerosis and degeneration causing increased blood pressure, and abnormal blood glucose can lead to microangiopathy and fat metabolism disorders. 2, urine, kidney function tests, can exclude renal hypertension, most kidney diseases have abnormal blood pressure, such as chronic nephritis typical symptoms. 3, the significance of cardiac function tests, is to exclude 4, the significance of chest X-ray examination, also to observe whether long-term hypertension causes cardiac hypertrophy. 5, the significance of fundus examination, to observe the retinal vessels of patients with hypertension, certain pathological changes can occur. The harm of hypertension is mainly the heart, brain, kidneys and other important organs, hypertensive patients with systolic blood pressure is best maintained at about 140-90mmHg, combined with diabetes or kidney disease patients to actively treat the original disease, the simple lowering of blood pressure is not effective.