Foldable elliptical trainer

The present invention provides a foldable elliptical trainer comprising a main frame, a crank mechanism and a flywheel pivoted to the main frame, a housing covering the flywheel, a guide rail rack capable of rotating between a usage angle and a folded angle relative to the main frame, a left driving bar and a right driving bar coupled between the crank mechanism and the guide rail rack, and a left pedal and a right pedal coupled with the two driving bars. The foldable elliptical trainer is characterized in that the guide rail rack is provided with a left arm and a right arm which are arranged outside the left surface and the right surface of the housing respectively; the guide rail rack is pivoted onto the base of the main frame through the front ends of the two arms according to a transverse axis at the bottom of the flywheel; when the guide rail rack is switched to the folded angle, a part of the housing is located between the left arm and the right arm.