 Nevertheless, there is no unanimous optimal target for blood pressure in patients with AD so far. The American Heart Association and the Canadian Cardiovascular Society recommend the blood pressure should be controlled to lower than 14090mmHg, while for patients with diabetes or chronic renal failure, the blood pressure target should be no less than 13080 mmHg. Recently, the Japanese Circulation Society recommended that the blood pressure should be controlled to no less than 130mmHg. Hence, the intensive control of blood pressure to 120 mmHg, compared to 140 mmHg, may improve the patients outcome. Thus, in this study, the effect of intensive blood pressure control 120mmHg with conventional blood pressure control 140mmHg on the prognosis of ABAD patients will be compared. 