Treadmill is a routine equipment in family and gym, the simplest one in family fitness equipment, and the best choice for family fitness equipment. A treadmill is mainly characterized in that a pivot rod is arranged at an appropriate position of an armrest frame, and then the pivot rod is extended to the front lower part of the machine body; the other end of the pivot rod is pivoted at an appropriate position of the running frame; and a ground-touching pulley is arranged at the bottom of the front end of the running frame, so that when the running frame is lifted from the rear, the ground-touching pulley will help the user to exert force, which has the characteristics of labor-saving folding and stable support.