The side effects of antihypertensive drugs are also very many, because there are many varieties of antihypertensive drugs, so its side effects are also different. Diuretics can cause electrolyte disorders such as hypokalemia and affect blood glucose, lipid and uric acid metabolism, as well as potassium-protective diuretics can cause hyperkalemia, and should be used with caution in renal insufficiency. Some Chinese patent medicine antihypertensive drugs also have certain side effects, which is also an aspect worth noting. Patients with hypertension should take blood pressure medication under the guidance of a treating physician and be fully aware of the possible side effects. And also regularly review the patient’s liver function, kidney function, as well as observe whether the patient appears red, edema, electrolyte disorders, dry cough and other abnormal performance, if then taking hypertension treatment drugs, patients appear side effects, should promptly consult the doctor to let the doctor, and timely according to the specific situation to adjust the variety of treatment, as well as the dose of treatment.