Low pressure of 70mmhg and high pressure of 110mmhg are normal after taking antihypertensive drugs. Normally, normal adults in a quiet state, the measured blood pressure value of 120/80mmhg, if the average of three non-same day measured blood pressure ≥ 140/90mmhg, the diagnosis of hypertension. It can be treated by lifestyle intervention and, if necessary, by taking antihypertensive drugs such as hydrochlorothiazide and metoprolol as prescribed by the doctor. If the blood pressure is 110/70mmhg after taking antihypertensive drugs, the blood pressure is within the normal range at this time, which proves that the antihypertensive drug has achieved the desired therapeutic effect. Therefore, it is a normal situation, it is recommended to continue to follow the doctor’s instructions to take antihypertensive drugs regularly, and in the process of taking medication to monitor the changes in blood pressure. If the blood pressure is abnormal after taking antihypertensive drugs, it is recommended to consult a doctor in time for treatment under the guidance of the doctor.