Hypertension was diagnosed if systolic blood pressure was ≥140 mmHg and/or diastolic blood pressure was ≥90 mmHg when the office blood pressure was measured 3 times on non-same day without anti-hypertensive medication. Patients with a previous history of hypertension, who have received regular blood pressure lowering therapy, were diagnosed with hypertension despite a blood pressure <140/90 mmHg. In a population with a continuous normal distribution of blood pressure levels, there is no clear line of demarcation between normotension and elevated blood pressure, and the criteria for hypertension are defined based on clinical and epidemiological data. Hypertension is further classified into three levels according to the level of elevated blood pressure. Grade I hypertension (mild) is systolic blood pressure 140-159 mmHg and diastolic blood pressure 90-99 mmHg; Grade II hypertension (moderate) is systolic blood pressure 160-179 mmHg and diastolic blood pressure 100-109 mmHg; Grade III hypertension (severe) is systolic blood pressure ≥180 mmHg and diastolic blood pressure ≥110 mmHg. In summary, it can be seen that hypertension grade I, i.e. mild hypertension How to treat depends on the presence of clinical disease and risk factors. If there is no combination of clinical disease and risk factors, it is low risk and treatment is based on improving lifestyle. If there are risk factors or a combination of clinical disease, medication needs to be initiated. Lifestyle improvement includes resting regularly, not staying up late, relaxing, reducing stress, not smoking, not drinking alcohol, exercising more, and controlling weight. It is also important to pay attention to a proper diet, including consuming adequate amounts of fruits and vegetables and reducing salt intake. The Chinese Nutrition Society recommends that the daily sodium intake of healthy adults should not exceed 6 grams (6 grams of salt is only equivalent to the volume of a beer bottle cap), and no more than 3 grams for patients with hypertension. With the above lifestyle improvements, most patients can return to normal, and if they still cannot return to normal after six months, medication is required. If there are risk factors or combined clinical diseases, such as combined hyperlipidemia, diabetes, coronary heart disease, kidney disease, cerebrovascular disease, etc., or a history of smoking and family history of cardiovascular disease at the same time, drug therapy needs to be initiated along with improving poor lifestyle. Commonly used drugs include angiotensin-converting enzyme inhibitors, such as benazepril; angiotensin II receptor antagonists, such as valsartan; calcium channel blockers, such as amlodipine besylate and nifedipine controlled-release tablets; beta-adrenergic receptor antagonists, such as metoprolol succinate.