This invention relates to the maintenance monitoring of passenger transport systems. The maintenance monitoring device for passenger transport systems of this invention comprises a radio/wireless beacon and personal mobile terminal, the radio beacon is roughly installed at an on-site check point of a passenger transport system and is used to broadcast radio signals toward its surroundings, and the personal mobile terminal is carried by the maintenance workers and is used to sense radio signals when the maintenance workers approach the corresponding radio beacon; wherein the personal mobile terminal and/or the radio beacon is configured to calculate the time period information of radio signals broadcast by the corresponding radio beacon and continuously sensed by the personal mobile terminal. This invention can automatically achieve monitoring of maintenance operations, features a good user experience for maintenance operations, and is beneficial to boosting compliance in maintenance operations.