If the blood pressure is 140/90mmHg for a short period of time, it is generally not dangerous, while long-term blood pressure at this value may be harmful to the heart, brain, kidneys and other target organs, which is more harmful. According to the criteria for the diagnosis of hypertension, hypertension can be diagnosed when the systolic blood pressure is ≥140mmHg and/or the diastolic blood pressure is ≥90mmHg in three measurements of office blood pressure on a non-same day without taking antihypertensive drugs. When the blood pressure is 140/90mmHg, if it is measured several times, and exclude the measurement of the relevant factors affecting the value of blood pressure, it has reached the diagnostic criteria of hypertension, but belongs to the first level of hypertension (mild) hypertension level, the short-term harm is not great, it is a controllable, it should be actively diet and exercise interventions, such as low-salt and low-fat diets, increase exercise, reasonable weight loss, and so on. If the blood pressure is 140/90mmHg or above for a long period of time, it can have certain damage to the heart, brain, kidney and other target organs, which is more harmful and can increase the risk of coronary heart disease, diabetes mellitus, nephropathy and cerebrovascular disease. If necessary, you can take amlodipine benzenesulfonate tablets, Benadryl, Irbesartan and other medications as prescribed by your doctor, and it is recommended that you take the medication under the guidance of your physician. It is recommended to seek medical attention as early as possible for examination and treatment under the guidance of a physician.