The maximum value of hypertension is not fixed, if it appears in hypertensive emergency, the systolic blood pressure can reach more than 200mmHg and diastolic blood pressure can reach more than 130mmHg. Hypertensive emergency means that the patient himself has a history of hypertension, and under the stimulation of some triggers, the blood pressure rises sharply, if the condition deteriorates sharply, and is accompanied by target organ insufficiency such as heart, brain and kidney. In patients with hypertensive emergency, blood pressure rises sharply in a short period of time, generally exceeding 180/120mmHg, and even systolic blood pressure can reach 200mmHg and above, and clinical manifestations such as headache and dizziness, drowsiness, blurred vision, and fainting may occur, which can seriously jeopardize the health of the body. If you have a sudden rise in blood pressure, you must go to a regular hospital immediately and cooperate with the doctor for treatment.