Exercise machine includes a base and a cushion. The cushion is slidably connected to the rotary rod. A left pedal and a right pedal are arranged at the front end of the base or at positions. A supporting rail is arranged on the base and has two sides respectively provided with guide grooves. A sliding frame is cooperatively disposed on the supporting rail and provided with left wheels and right wheels, which are respectively matched with the guide grooves. A left cross rod and a right cross rod respectively extend out from two sides of the supporting rod. A left pull rod and a right pull rod are respectively hinged to the end of the left cross rod and the end of the right cross rod. Elastic ropes are disposed between the left pull rod and the rotary rod, and also between the right pull rod and the rotary rod.