Hypertension is the most common cardio-cerebrovascular disease. At present, China’s rapid economic development, social transformation, aging population intensification, people’s standard of living and lifestyle changes, the prevalence of hypertension increases year by year, but the control rate has been at a relatively low level. Early screening of hypertension is applicable to the hypertensive population and the hypertensive susceptible population. The hypertensive population includes those with systolic blood pressure ≥ 140 mmHg and/or diastolic blood pressure ≥ 90 mmHg measured on three different days and those who have been diagnosed with hypertension and are now taking antihypertensive medication to control their blood pressure in the normal range. People who are susceptible to hypertension include those with systolic blood pressure of 130-139 mmHg and/or diastolic blood pressure of 85-8 mmHg; overweight people; people with a family history of hypertension; people with a long-term high-salt diet; people who smoke and drink alcohol for a long time and people aged ≥55 years. The screening process of hypertension includes: 1. Routine screening: (1) blood pressure measurement (2) blood routine, blood biochemistry (liver and kidney function, blood glucose and lipids), urinalysis (urine routine, urine four), electrocardiogram (3) ambulatory blood pressure monitoring, echocardiography, carotid ultrasound, blood homocysteine, fundus examination, chest X-ray, etc. 2. Screening for secondary hypertensive factors: (1) five items of hypertension, blood and urine catecholamines (2) renal and adrenal ultrasound, CT or MRI, renal arteriography, thyroid function, sleep apnea monitoring, cranial and pituitary CT or MRI, etc. 3. Hypertension susceptibility gene testing: detection of genes and mutation loci, and further genetic screening can be done for the family after the test results are available. Through early screening, early detection of hypertension, early prevention and early treatment, the awareness rate, treatment rate and control rate of hypertension can be improved, thus reducing the incidence, disability and death rate of hypertension.