The invention discloses a rail front protecting door system of rail traffic interval. The rail front protecting door system of rail traffic interval comprises a door frame (3), a door body (6), a branch box (1), a travel switch connecting wire (2) and an electromagnetic lock connecting wire (7). A heavy duty hinge (4) is arranged between one side of the door body (6) and one side of the door frame (3). The door body (6) is provided with a mechanical bar pushing lock (9). An electromagnetic lock (8) is arranged between the other side of the door body (6) and the other side of the door frame (3). A travel switch (5) is arranged on the door frame (3). According to the rail front protecting door system of rail traffic interval, the door body adopts an internal and external steel plate structure with frameworks and fireproof thermal insulation cotton, a combining mode that the mechanical lock pushes a bar to trigger the electromagnetic lock is adopted, the fatigue resistance of the door body is high, the problems of door body deformation and falling-off are solved effectively, lock tools are reliable, the state of a door can be monitored in real time, and maintenance and care are convenient for operational staff.