The utility model discloses an automatic gradient lifting and folding structure and a
treadmill applying the same. The automatic gradient lifting and folding structure comprises a bottom frame, a supporting frame, a
workbench and a telescopic rod. The underframe is fixedly arranged; the front portion of the supporting frame is pivoted to the bottom frame through a first rotating shaft extending left and right, and the rear portion of the supporting frame is movably arranged. The front portion of the
workbench is pivoted to the rear portion of the supporting frame through a second rotating shaft extending leftwards and rightwards, and the rear portion of the
workbench is movably arranged. The telescopic rod is located below the supporting frame and the workbench, the front portion of the telescopic rod is hinged to the bottom frame, and the rear portion of the telescopic rod is hinged to the workbench, so that after the telescopic rod retracts, the workbench can be pulled to move forwards, the rear portion of the supporting frame is driven to swing upwards, the front portion of the workbench is supported, and after the telescopic rod extends, the rear portion of the workbench can be pushed to swing upwards, and the workbench is erected. According to the utility model, the inclination angle of the workbench can be adjusted and the workbench can be erected and folded.