Secondary hypertension is elevated blood pressure secondary to other diseases, while primary hypertension is elevated blood pressure with unclear etiology. 1. Secondary hypertension: elevated blood pressure has a clear cause, such as primary aldosteronism, pheochromocytoma, etc. When the primary disease is cured, the blood pressure will gradually return to normal. However, if the primary disease is not cured and only blood pressure lowering treatment is carried out, the condition will be easily repeated and the treatment effect is not complete. 2. Primary hypertension: There is no clear cause for elevated blood pressure, which may be related to genetic, overweight, age and other factors, and elevated blood pressure is usually controlled by antihypertensive drugs. At present, the more common primary hypertension needs to continue to take antihypertensive drugs, which can keep the blood pressure stable during the period of continuous medication. However, dietary adjustments, external environmental stimuli or emotional fluctuations may lead to elevated blood pressure and recurring conditions, so persistent treatment is required to keep blood pressure in the normal range. If your blood pressure is high, you should go to the hospital in time to have your blood pressure tested and receive standardized treatment.