A system for providing a personalised exercise guide according to various embodiments of the present invention may comprise: a wearable device for measuring a first bio-signal of a user using one or more sensors, and for transmitting to an electronic device and measured first bio-signal of the user; and the electronic device for receiving from the wearable device the measured first bio-signal of the user, for obtaining body data of the user based on the received first bio-signal of the user, for calculating a required quantity of exercise based on the obtained body data of the user and a preset goal, and for comparing and analyzing body data variation of the user that is estimated based on the calculated required quantity of exercise with the actual body data variation of the user due to exercise.