Renal artery interventional treatment is very important for the patients who have real indication of treatment. Two major studies indicated that renal artery interventional treatment is not effective. But many enrolled patients of these studies did not have real indication. Renal artery intervention has some risks of injury to the aorta and renal artery. And renal artery intervention also has much risk of distal embolization. Some techniques, novel renal artery stent, and adequate devices reduce such risks of renal artery intervention.