The invention relates to the technical field of mechanical equipment, in particular to a position limiting device which can rotate on multiple layers and at any angle. The position limiting device comprises a revolving body, a servo stopper, position limiting sliding device and a fixed frame. The position limiting sliding device includes a shell with an arc groove and a position limiting stopper partly sliding-equipped in the arc groove. The revolving body connects outwards with the servo stopper which is equipped with at least one position limiting sliding device outwards along the axis. The servo stopper is contacted with the position limiting stopper of the position limiting sliding device, the shell of which is fixedly connected with position limiting stopper of the neighboring outward position limiting sliding device, and the shell of the most lateral position limiting sliding device is fixedly connected with the frame. The arc groove of the shell of the position limiting sliding device is concentric with the gyration centre of the revolving body. The invention is characterized in simple structure, multiple-angle position limiting, flexible position limiting, convenient application and wide adaptation.