Blood test is a broad concept, such as blood routine, liver function, kidney function, blood glucose, blood lipid, blood uric acid, electrolyte, immune series, serology, thyroid function, etc. Through different testing items to provide reference for doctors and make the basis for treatment. Hypertension, as a common chronic disease, also requires examination of necessary blood items, such as blood glucose, blood lipids, liver function, kidney function, etc. to evaluate the organism and provide a basis for clinicians to prescribe various antihypertensive drugs. In addition to blood tests, patients with hypertension should also combine other ancillary tests, such as electrocardiogram and ultrasound, to evaluate their condition.