Hypertension two generally refers to the renin activity test and aldosterone test. 1. Renin: Renin is a protein hydrolase secreted by glomerular paraglomerular cells, which can react with angiotensinogen to produce angiotensin I, which is hydrolyzed to angiotensin II under the action of converting enzyme. This substance can constrict arterial blood vessels and stimulate the adrenal cortex to secrete aldosterone. 2. Aldosterone: Aldosterone can promote the reabsorption of sodium ions, and at the same time improve the excretion efficiency of potassium ions, and thus achieve the role of regulating blood volume and blood pressure. The two tests for hypertension are mainly used for clinical diagnosis and renin testing as well as metabolic disorders and diseases caused by dysregulation of the angiotensin and aldosterone systems. Attention should be given to both blood pressure tests during the consultation in order to provide direction for subsequent treatment.