Installation structure of rear triangular window glass

The utility model discloses an installation structure of rear triangular window glass. The installation structure of the rear triangular window glass comprises a triangular window glass assembly, side surrounding C columns and side surrounding C column reinforcing pieces, wherein positioning pins are arranged at three apex angles of the triangular window glass assembly respectively, each side surrounding C column is provided with a positioning hole matched with the corresponding positioning pin, each side surrounding C column reinforcing piece is provided with an installation via hole corresponding to the corresponding positioning pin in position, an inverted clamping hook is arranged at the front end of each positioning pin, each positioning pin is located inside each positioning hole and is matched with the positioning hole in a positioned mode, and the inverted clamping hook of each positioning pin penetrates out of the corresponding positioning hole and is matched with the corresponding side surrounding C column in a clamping mode. The installation structure of the rear triangular window glass solves the problems that when an existing installation structure is used, hole dislocation during clamping occurs easily, proper clamping can not be achieved and positioning pins are damaged, and achieves convenient and reliable installation.