A walking training system comprising: a belt conveyor on which a trainee walks; a pair of frames being positioned on both sides of the belt conveyor, one frame on each side, to allow an assistant to place each of both feet thereon; a first sensor configured to measure a presence state of a foot on the pair of frames and/or a second sensor configured to measure a presence state of a foot on the belt conveyor; and a control device, characterized in that the first sensor comprises a plurality of load sensors for detecting a load distribution of each foot onto the pair of frames and/or the second sensor comprises a plurality of load sensors for detecting a load distribution of each foot onto the belt conveyor, and the control device is configured to perform at least one of a first regulation and a second regulation, the first regulation including determining, based on the load distribution of each foot onto the pair of frames detected by the plurality of load sensors of the first sensor, whether there are three or more feet on the pair of frames, and performing at least one of controlling to reduce speed of the belt conveyor, stop the belt conveyor, and notify a warning to the trainee and the assistant, when the control device determines that there are three or more feet on the pair of frames, and the second regulation including determining, based on the load distribution of each foot onto the belt conveyor detected by the plurality of load sensors of the second sensor, whether there are three or more feet on the belt conveyor, and performing at least one of controlling to reduce speed of the belt conveyor, stop the belt conveyor, and notify a warning to the trainee and the assistant, when the control device determines that there are three or more feet on the belt conveyor. a belt conveyor on which a trainee walks; a pair of frames being positioned on both sides of the belt conveyor, one frame on each side, to allow an assistant to place each of both feet thereon; a first sensor configured to measure a presence state of a foot on the pair of frames and/or a second sensor configured to measure a presence state of a foot on the belt conveyor; and a control device, characterized in that the first sensor comprises a plurality of load sensors for detecting a load distribution of each foot onto the pair of frames and/or the second sensor comprises a plurality of load sensors for detecting a load distribution of each foot onto the belt conveyor, and the control device is configured to perform at least one of a first regulation and a second regulation, the first regulation including determining, based on the load distribution of each foot onto the pair of frames detected by the plurality of load sensors of the first sensor, whether there are three or more feet on the pair of frames, and performing at least one of controlling to reduce speed of the belt conveyor, stop the belt conveyor, and notify a warning to the trainee and the assistant, when the control device determines that there are three or more feet on the pair of frames, and the second regulation including determining, based on the load distribution of each foot onto the belt conveyor detected by the plurality of load sensors of the second sensor, whether there are three or more feet on the belt conveyor, and performing at least one of controlling to reduce speed of the belt conveyor, stop the belt conveyor, and notify a warning to the trainee and the assistant, when the control device determines that there are three or more feet on the belt conveyor.