Hypertension and kidney have a very close relationship. Patients with long-term high blood pressure, if not formally controlled, can lead to increased intracapsular pressure in the kidney, causing renal arteriosclerosis, which can lead to renal insufficiency, and continued development will lead to renal failure. Patients with kidney disease can also cause high blood pressure, as renal hypertension, is a common secondary hypertension. High blood pressure can damage the kidneys, and kidney disease can raise blood pressure, and the two can be causally related to each other, and a vicious circle may occur, and irregular treatment will make the condition more and more serious. Patients with hypertension should control their blood pressure regularly so that it fluctuates within the ideal range to delay the damage to the kidneys. If patients have kidney disease, they should pay attention to monitoring blood pressure and give antihypertensive treatment to lower blood pressure below 130/80 mmHg. If there are no contraindications to the choice of drugs, try to add ACEI and ARB drugs, which can inhibit the renal RAAS system, reduce urinary protein and play a role in protecting the kidneys.