A blood pressure measurement control method for controlling the measurement of a blood pressure according to an oscillometric method has the steps of determining whether to employ a depressurization measurement method or a pressurization measurement method to measure the blood pressure according to a person to be measured, performing a measurement process of the blood pressure in a depressurization process when determined to measure the blood pressure with the depressurization measurement method, performing a measurement process of the blood pressure in a pressurization process when determined to measure the blood pressure with the pressurization measurement method, and outputting the measured blood pressure value.