Aim: To investigate the value of ambulatory blood pressure load in elder hypertension stage.Methods: Ambulatory blood pressure load during 24 h was measured by ambulatory blood pressure monitoring in 16 cases of normal blood pressure, 25 patients with hypertension at stage one, 34 patients with hypertension at stage two, and 27 patients with hypertension at stage three in elder.Results: The blood pressure load increased along with the different hypertension stage. The difference of blood pressure load between group stage one and normal group was remarkable(P<0. 001) during 24 h,day and night. Blood pressure load of group stage two was significantly increased than group stage one at night (P<0.001). Systolic blood pressure load was significantly different between group stage three and group stage two(P<0.01) during 24 h. In addition, the blood pressure load of group stage three was mainly presented at the second high period of abnormal blood pressure.Conclusion: Blood pressure load might reflect the time, the frequence, and the extent of abnormal blood pressure. Ambulatory blood pressure load takes important effect in elder hypertension stage.