The relationship between renal cysts and hypertension: 1. The site is decided, long in the renal hilar compression of renal blood vessels causing renal artery stenosis hypertension, and difficult to control. Do isotope renal imaging can be seen on the affected side of the small kidney map. If in the kidney around the relationship is not much. 2. How much is decided, a small number of small cysts rarely have an effect, while multiple or large cysts can be associated with hypertension. The mechanism is compression of the small arteries of the kidney into the bulb causing increased renin secretion resulting in hypertension. The effect on blood pressure varies depending on the location of the renal cyst. A cyst grown in the renal hilum compressing the renal artery can cause renal vascular hypertension, manifesting as difficulty in lowering blood pressure, high renin, small renogram, etc. It is sensitive to ACEI. If it grows in the renal cortex, it will have less effect on blood pressure. Therefore, kidney cysts must be carefully diagnosed and treated, and those affecting blood pressure or compressing renal pelvis should be consulted by urological specialists; otherwise, they should be treated peacefully. There should not be anxiety, tension and repeated examinations, which are not good for blood pressure and mood.