If the diastolic blood pressure is greater than 90mmHg for the first time or occasionally, it can be lowered by adjusting the lifestyle; if the diastolic blood pressure is greater than 90mmHg for a long time, it can be lowered by antihypertensive drugs. 1. First time or occasional diastolic blood pressure greater than 90mmHg: At this time, you can pay attention to regular diet, avoiding intake of high oil and high salt food, increase appropriate exercise to lower blood pressure. 2. Long-term diastolic blood pressure greater than 90mmHg: In this case, you should consult a doctor in time to grade your high blood pressure and use beta-blockers such as metoprolol, calcium channel blockers such as nifedipine and other drugs to treat it, along with a regular diet, work and rest, and so on. If diastolic blood pressure is greater than 90mmHg, you can seek medical advice and treatment under the guidance of a doctor, and relevant medications should be used under the guidance of a doctor.