A schedule management device includes a processing unit and a storage unit for storing schedule list recording events, each of which includes event content, event date and position information. The processing unit includes a position information acquiring module, a position information comparing module, a date information judging module and a display module. The position information acquiring module acquires position information of the event(s). The position information comparing module determines whether the position information of the event(s) and the schedule management device belong to a same area. The date information judging module judges whether the current date information is a predetermined date before the event date when the position information of the event(s) and the schedule management device don't belong to the same area. The display module displays the event content of the event(s) when the current date information is the predetermined date before the event date.