Blood pressure is related to blood glucose, and high blood glucose may cause hypertension. Patients with type 2 diabetes mellitus may have insulin resistance effect, causing sodium retention in the kidneys, activating the sympathetic nervous system, increasing peripheral and renal vascular resistance, damaging the endothelium of the blood vessels, and altering the sodium and calcium ion transport in the smooth muscle of the blood vessels, thus leading to elevated blood pressure. 1. Causes sodium retention in the kidneys: the kidneys keep sodium in the blood, making the blood “saltier”, so the osmotic pressure is higher, and the blood pressure will rise. 2. Activates the sympathetic nervous system: this translates into more nervousness, faster heartbeat, and more constriction of blood vessels, so blood pressure will be higher. 3. Increase peripheral and renal vascular resistance: that is, the blood vessels become narrower and the pressure becomes higher. 4. Damage the endothelium of blood vessels: the endothelium of blood vessels is very smooth, but once the endothelium is damaged, it will be easy to form atherosclerosis, leading to high blood pressure, but also easy to infarction. 5. Change the transportation of sodium and calcium ions in the smooth muscle of blood vessels, etc.: Because of the change of sodium and calcium, it will make the blood vessels easy to become narrow. It is recommended that patients regularly monitor their own blood glucose and blood pressure, the results of abnormalities should be timely medical treatment.