To obtain a schedule managing method of portable terminal, by which a user automatically manages a schedule without being conscious of the schedule of others, the labor is reduced and the convenience is improved.

A schedule management agent 110 adjusting a schedule with the other terminal equipment through a communication means 103 connected to a network is provided with a schedule management means 111 referring to, adding and correcting management information managing the schedule and a schedule adjusting means 112 referring to management information that the schedule management means holds in accordance with an inputted schedule request, adjusting the plural schedules containing the schedule request from the other terminal equipment and gives the instruction of the registration of the adjusted schedule to the schedule management means. The inputted schedule request is automatically adjusted and decided.