To provide a schedule adjusting system and method capable of easily adjusting the opening schedule of an event in which a member intends to participate.

When a certain member inputs schedule information from a schedule adjusting page 10 displayed on a terminal 2, a schedule adjusting program corresponding to an event to be opened which is stored in an Internet server is started, the page 10 is changed on the basis of the inputted schedule information and a member's event schedule table is displayed, so that each member's schedule can be easily changed or added independently of specified equipment or a network. Each member can grasp the schedules of members participating in the event and forecast the opening schedule of the event and the opening schedule of the event can be smoothly adjusted.