Mountain climbing machine

A mountain climbing machine, comprising:

• a support frame assembly, comprising a first supporting frame arranged in a front-back direction and configured for supporting on ground, and a second supporting frame located on an upper side of the first supporting frame;
• wherein the mountain climbing machine has a usage state, when in use, a back end of the second supporting frame is connected to the first supporting frame, and the second supporting frame is gradually inclined upward from back to front;
• the second supporting frame is equipped with two left and right parallel guiding members, and the second supporting frame is further equipped with a winding pulley assembly;
• each guiding member is equipped with a pedal assembly that slides on each guiding member, and a traction rope that surrounds the winding pulley assembly is connected between two sets of the pedal assembly;
• a first locking assembly, arranged between the first supporting frame and the second supporting frame and configured for locking the second supporting frame to the first supporting frame in the usage state;
• and
• an armrest frame assembly, arranged on a front side of the supporting frame assembly and extends upward above the second support bracket when in the usage state.