In an exercise instrument controller, a type determination unit specifies, from among a plurality of types, the type of exercise for which an exercise instrument is used. An association determination unit specifies association between a body part that is exercised and the exercise instrument based on the type that has been specified. A setting processing unit sets an operation detail of the exercise instrument based on user's manipulation. An instrument control unit controls, by transmitting information indicating an operation detail for each exercise instrument based on the association between the body part and the exercise instrument that has been specified and the operation detail that has been set, exercise by the exercise instrument. A display control unit controls a screen display regarding the association between the body part and the exercise instrument, the operation detail, and an exercising status.