PURPOSE: To provide a train operation control device low-priced and excellent in responsiveness by making not only the operation control device but also each terminal device have a diagram file so that each terminal device receives the input of information and checks the input at the operation arranging time.

CONSTITUTION: When operation arrangement information such as the change of a diagram is inputted. into a terminal device 14a, for instance, the terminal device 14a checks the input of the operation arrangement information and performs transmission to an operation control device 13 when the checked result has no problem. The operation control device 13 checks the state among trains using a control diagram and an operation state file on the basis of this operation arrangement information, and in the case of no problem, instruct the respective terminal devices 14a, 14b, 14c to correct the diagram. The instruction of correction is performed using broadcasting (simultaneous communication) function in a bus-type LAN 15. After the instruction of correction, the operation control device 13 corrects the control diagram in a data file.