The main components of the L-shaped horizontally-shifting telescopic passenger boarding bridge are: joint building, rear door frame, side-by-shore telescopic road, front door frame, land side lifting mechanism, vertical bank expansion channel, sea side lifting mechanism, walking mechanism, and ship receiving Mouth, repair ladder, etc. Compared with other forms of boarding bridges, the L-shaped transverse boarding bridge has a wider range of activities and a wider adaptability, which can adapt to different parking positions. The traveling mechanism is an orbital overall traverse, driving the boarding bridge to achieve horizontal movement in parallel with the waiting ship building on the platform; 2 sets of lifting mechanism enable the boarding bridge to achieve height direction movement, so that the ship receiving port and the service The various cruise door doors are highly adaptable.