WATERPROOF STRUCTURE OF VEHICLE SUNROOF

A waterproof structure having a front window assembly (100), a rear window assembly (200) and a pair of window side frame bars (300). The front window assembly (100) has a front glass panel (110), a front frame (120), and a rear side portion (101). The rear window assembly (200) has a rear glass panel (210), a rear sealing strip (230), a pair of side edges (202), and a front side portion (201) connected between the pair of side edges (202). Each window side frame bar (300) has a protrusion (310) extended toward the rear side portion (101). The rear side portion (101) has a pair of cover portions (121) extended from two ends respectively, the front frame (120) abuts against the rear sealing strip (230) when the rear side portion (101) moves to the front side portion (201), and the rear sealing strip (230) and the protrusions (310) are covered by the cover portions (121) respectively.