An electronic sphygmomanometer includes an activation controlling part (201) for performing a control to activate one of a plurality of functions (203 to 206) included in a first function group and a second function group of the electronic sphygmomanometer based on an instruction signal from a user. The first function group includes a measuring function (203, 204) by a blood pressure measuring unit, and the second function group includes an information changing function (205, 206) related to erasing of a measurement value or changing of a set value. The activation controlling part includes a determining portion (2011) for determining whether started with a specific operation, and a setting portion (2012) for setting enable/disable of activation of the second function group based on the determination result by the determining portion.
