It is possible for Grade 3 hypertension to return to Grade 1 with reasonable treatment. Grade 1 hypertension is mild hypertension, with systolic blood pressure of 140-159mmHg and/or diastolic blood pressure of 90-99mmHg. Grade 3 hypertension is severe hypertension, with systolic blood pressure greater than or equal to 180mmHg and/or diastolic blood pressure of 110mmHg. Grade 3 hypertension can be gradually lowered to Grade 1 or even normal blood pressure with combined, long-term treatment. Blood pressure value. Once diagnosed, patients with Grade 3 hypertension need to be controlled with antihypertensive medication and regular visits, and usually need to be treated with a combination of two or more medications for long-term antihypertensive therapy. Commonly used antihypertensive drugs mainly include angiotensin II receptor antagonists such as chlorosartan, angiotensin-converting enzyme inhibitors such as captopril, calcium channel blockers such as nifedipine, diuretics such as hydrochlorothiazide, and beta-blockers such as metoprolol. The use of antihypertensive drugs should be accompanied by appropriate exercise to reduce body weight, reduce sodium intake, eat more fresh vegetables and milk every day to replenish potassium, stop smoking and limit alcohol consumption, and reduce fat intake by keeping dietary fat to less than 25% of total calories. Through blood pressure-lowering medications and lifestyle interventions, it is possible to change back to Grade 3 hypertension.