PURPOSE: To provide a schedule management system by which the content of a schedule can be easily recognized, and the management of the schedule can be efficiently attained by an input and a display adapted to the actual schedule.

CONSTITUTION: At the time of inputting the schedule in a time overlapped on the time of a previously inputted schedule 47 in a weekly display screen, the pertinent time can be inputted by a mouse on the displayed schedule 47. Then, the transition of a schedule input screen can be obtained, and the schedule is inputted to the screen. Thus, in a day display column which is displayed by day units, an area for two units can be established in a vertical direction on October 11th, so that the schedules 47 and 53 which are overlapped on each other can be separately displayed.