A walking training system capable of suppressing a state in which a walking trainee feels uncomfortable during walking training is provided. A walking training system 1 according to an aspect of the present invention includes a treadmill 31 including a belt 311 on which a walking trainee performs walking training, the belt 311 being moved in a rotational manner; a controller 5 that controls the rotational operation of the belt 311; and a walking assistance apparatus 3 that is mounted on a leg portion of the walking trainee and assists the walking operation of the walking trainee. The walking training system 1 further comprises a detection unit 314 that detects whether the leg portion of the walking trainee on which the walking assistance apparatus 3 has been mounted has performed a walking operation or a stepping operation on the belt 311, and the controller 5 maintains an operation prohibition state in which the rotational operation of the belt 311 is not started until the time that the detection unit 314 detects the walking operation or the stepping operation a predetermined number of times and cancels the operation prohibition state after the detection unit 314 detects the walking operation or the stepping operation the predetermined number of times.