To reduce input mistakes in timetable information.

This train alarm system includes a train alarm information generating device 2 and a train alarm device 30. The train alarm information generating device 2 is provided with a means 16 inputting timetable information via a graphical user interface displaying timetable diagrams of a plurality of stations, a means 17 extracting the timetable information between stations about the stations selected from a plurality of stations, and a means 18 transmitting the timetable information between the stations to the train alarm device 30 having an alarm means on the basis of the timetable information between the stations. The train alarm device 30 is provided with a means receiving the timetable information between stations from the train alarm information generating device and a means giving an alarm on the basis of the timetable information between the stations.