PURPOSE: To provide a process management device capable of confirming the contents of operation on a screen.

CONSTITUTION: A schedule data storage means 12 stores data on the operation contents of one or not less than two operation schedules and data on the processing period of the operation schedules, which are processed by each operation unit of plural operation units within the storage area of each operation unit based on the input of data in the order of the processing period. A display means 14 displays the processing period of the operation schedule as a band graph on the same time base concerning each operation schedule stored in the schedule data storage means 12 by each operation unit. An input means 16 inputs data of the processing contents and data on the processing period by each operation unit. A control means 28 makes the schedule data storage means to storage data on the operation contents and data on the processing period, which are inputted from the input means 14. Furthermore, the display means 14 is provided with a function displaying the operation contents stored in the schedule data storage means 12 with a corresponding bar graph.