To extensively relax restriction of an escalator installing site by restraining width and height of an overall escalator by eliminating an interference between a riser of a footstep and a follow-up rail by eliminating the conventional follow-up rail on a horizontal part on the return route side of the footstep constituting an endless type footstep circuit.

A footstep attitude holding and guiding means 13 to hold the step board 3 of the footstep 1 in a roughly horizontal attitude is provide on the horizontal part of the return route side of the footstep 1 endlessly connected and rotationally driven.