Maintenance method for passenger room door of railway vehicle

The invention relates to an overhauling method for passenger room doors of a railway vehicle, and the railway vehicle is provided with a plurality of passenger room doors, a door controller used for controlling the passenger room doors, and a maintenance interface used for executing maintenance on the passenger room doors. The maintenance method comprises the following steps: (S1) inputting an instruction through the maintenance interface to call a historical fault record of the door controller and display information about historical faults; (S2) inputting a door opening instruction and a door closing instruction through the maintenance interface, and respectively monitoring and calling response information of each passenger room door; 3, a door opening instruction is input through the maintenance interface, and whether the current curve of the motor of each passenger room door is normal or not is detected; a fourth step (S4) of detecting whether the clock of the gate controller is accurate; and a fifth step