Objective To analyze the present situation of blood pressure control in aged patients with hypertension, and to explore the factors of poorly control of blood pressure.Methods 350 cases with primary hypertension were investigated according to categorization of orally antihypertensive drug.Results The taking rate of antihypertensive drug was 95.78%,and blood pressure control rate was 62.85%.The reasons of the poor control of the blood pressure were pertinacious hypertension(30.2%),poor compliance(29.8%),shor...