A maintenance monitoring device for passenger transport systems, comprising: a radio beacon (200-1, 200-1), which is installed at an on-site check point of a passenger transport system and is used to broadcast radio signals toward its surroundings; and a personal mobile terminal (100-1, 100-2), which is carried by maintenance workers and is used to sense radio signals when the maintenance workers approach the corresponding radio beacon; characterised in that the personal mobile terminal (100-1, 100-2) and/or the radio beacon (200-1, 200-1) 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 (100-1, 100-2), wherein the time period information comprises the length of the time period and corresponding points in time; wherein: (i) the personal mobile terminal (100-1, 100-2) further comprises: a time period information generation unit, which is configured to calculate the time period information of radio signals broadcast by the corresponding radio beacon (200-1, 200-1) and continuously sensed by the personal mobile terminal (100-1, 100-2); and a compliance determination unit, which is configured to determine the compliance of the maintenance operations of the maintenance workers at an on-site check point of the corresponding radio beacon (200-1, 200-1) based on the time period information; or (ii) the maintenance monitoring device also comprises a maintenance management terminal, wherein the maintenance management terminal comprises: a time period information acquisition unit, which is used to receive the time period information from the personal mobile terminal (100-1, 100-2) or radio beacon (200-1, 200-1); and a compliance determination unit, which is used to determine the compliance of the maintenance operations of the maintenance workers at an on-site check point of the corresponding radio beacon (200-1, 200-1) based on the time period information. a radio beacon (200-1, 200-1), which is installed at an on-site check point of a passenger transport system and is used to broadcast radio signals toward its surroundings; and a personal mobile terminal (100-1, 100-2), which is carried by maintenance workers and is used to sense radio signals when the maintenance workers approach the corresponding radio beacon; characterised in that the personal mobile terminal (100-1, 100-2) and/or the radio beacon (200-1, 200-1) 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 (100-1, 100-2), wherein the time period information comprises the length of the time period and corresponding points in time; (i) the personal mobile terminal (100-1, 100-2) further comprises: a time period information generation unit, which is configured to calculate the time period information of radio signals broadcast by the corresponding radio beacon (200-1, 200-1) and continuously sensed by the personal mobile terminal (100-1, 100-2); and a compliance determination unit, which is configured to determine the compliance of the maintenance operations of the maintenance workers at an on-site check point of the corresponding radio beacon (200-1, 200-1) based on the time period information; or a time period information generation unit, which is configured to calculate the time period information of radio signals broadcast by the corresponding radio beacon (200-1, 200-1) and continuously sensed by the personal mobile terminal (100-1, 100-2); and a compliance determination unit, which is configured to determine the compliance of the maintenance operations of the maintenance workers at an on-site check point of the corresponding radio beacon (200-1, 200-1) based on the time period information; or (ii) the maintenance monitoring device also comprises a maintenance management terminal, wherein the maintenance management terminal comprises: a time period information acquisition unit, which is used to receive the time period information from the personal mobile terminal (100-1, 100-2) or radio beacon (200-1, 200-1); and a compliance determination unit, which is used to determine the compliance of the maintenance operations of the maintenance workers at an on-site check point of the corresponding radio beacon (200-1, 200-1) based on the time period information. a time period information acquisition unit, which is used to receive the time period information from the personal mobile terminal (100-1, 100-2) or radio beacon (200-1, 200-1); and a compliance determination unit, which is used to determine the compliance of the maintenance operations of the maintenance workers at an on-site check point of the corresponding radio beacon (200-1, 200-1) based on the time period information.