Hypertension grade 3 is more serious than hypertension grade 1. In total, hypertension is categorized into grades 1-3, with grade 1 hypertension being the mildest, grade 3 hypertension being the most serious, and grade 2 hypertension being intermediate and so on. Grade 1 hypertension means that the patient’s high pressure does not exceed 160mmHg and low pressure does not exceed 100mmHg, and the patient often does not have any symptoms. Grade 3 hypertension means that the high pressure is more than 180mmHg and the low pressure is more than 110mmHg. Grade 3 hypertension is very dangerous, and the patient will suffer from severe headache and dizziness, and severe cerebral infarction or cerebral hemorrhage may occur. Hypertension level 3 need to lower blood pressure urgently, the first choice to take antihypertensive drugs, if taking antihypertensive drugs after the blood pressure is still higher than normal can be intravenous drip antihypertensive drug therapy, hypertension level 1 if the patient does not have symptoms can be treated through exercise therapy.