Disclosed herein is a combination therapy and a combination preparation of an angiotensin-II-receptor blocker and an HMG-CoA reductase inhibitor characterized in that the angiotensin-II-receptor blocker is absorbed substantially later than the HMG-CoA reductase inhibitor. As the angiotensin-II-receptor blocker and the HMG-CoA reductase inhibitor are released at different times, the present combination therapy prevents competitive inhibition between the two drugs and side effects, as well as simultaneously provides synergistic effects for each active ingredient and convenience of taking the drugs.