Previously normal blood pressure suddenly high blood pressure within a few days, you can first by improving the lifestyle, if necessary, follow the doctor’s advice to choose hydrochlorothiazide, metoprolol and other antihypertensive drugs treatment. Normally, if a normal person’s blood pressure is ≥140/90mmhg on three non-same-day measurements in a quiet state, he or she is diagnosed with hypertension. If the blood pressure was normal before and suddenly becomes high within a few days, it is necessary to exclude whether it is due to smoking, drugs, mental stress, diet and other factors. The blood pressure can be restored to normal by improving lifestyle first, such as stopping taking medication, quitting smoking and limiting alcohol, and relaxing. If the blood pressure does not reach the desired level of control after improving the lifestyle, it is recommended to choose antihypertensive drugs such as hydrochlorothiazide and metoprolol as prescribed by the doctor, which are able to reduce the extracellular volume, lower the peripheral vascular resistance and inhibit the contractility of the heart muscle, thus exerting the effect of lowering the blood pressure and keeping the blood pressure in the desired range. If the above symptoms occur, it is recommended to go to the hospital in time for early and regular treatment.