High blood pressure medication is low may lead to the occurrence of dizziness, headache, and even life-threatening situations. Hypertension blood pressure is generally lowered to 140mmHg systolic blood pressure, diastolic blood pressure below 90mmHg, it reaches a basic reasonable range, but the specific varies from person to person, some patients lowering the pressure requirement is more stringent. In this process, if the blood pressure is lowered too much, the systolic blood pressure is lower than 90mmHg or the diastolic blood pressure is lower than 60mmHg, in this case, it is easy to have low blood pressure and show dizziness, or even postural low blood pressure, which will cause dizziness, fainting and other adverse clinical consequences. In the process of applying antihypertensive drugs, blood pressure must be monitored to assess the effect of antihypertensive, and drugs should be adjusted according to the situation in time. If hypotension occurs, first of all, follow the doctor’s instructions to reduce the amount of medication, and then in the process to avoid some strenuous activities, so as to avoid dizziness, fainting and other secondary injuries.