Running trainer

The utility model discloses a running trainer. The treadmill comprises a base and a treadmill body installed on the base. Symmetrical protective fences are arranged on the two sides of the base. A load bearing device is arranged on the protective fence at the tail end of the rotating direction of the treadmill; a supporting frame is mounted at the top of the protective fence; a training vest capable of horizontally moving is hung below the supporting frame; the training vest is connected with the load-bearing devices on the two sides, a chest expander connected with the training vest is arranged between the two sets of protective guards at the tail end of the rotating direction of the treadmill, a buffer plate is hinged to the base at the front end of the rotating direction of the treadmill, and a safety rope connected with the training vest is arranged on the buffer plate. The weight bearing device and the chest expander are installed on the protective guard, gravity and tension can be provided for athletes,