The invention provides an automobile skylight waterproof structure. The automobile skylight waterproof structure comprises a front window assembly (100), a rear window assembly (200) and a pair of window side frame strips (300). The front window assembly (100) is provided with a front glass panel (110) and a front frame body (120), the front frame body (120) is arranged on the periphery of the front glass panel (110), and the front window assembly (100) is provided with a rear end part (101). The rear window assembly (200) is provided with a rear glass panel (210) and a rear waterproof strip (230), the rear window assembly (200) is provided with a pair of side edges (202) and a front end portion (201) connected between the side edges (202), and the rear waterproof strip (230) is arranged on the side edges (202) and the front end portion (201) in a surrounding mode. The window side frame strips (300) are arranged adjacent to the side edges (202) of the rear window assembly (200) respectively, and each window side frame strip (300) is provided with a protruding part (310) extending towards the rear end part (101). A pair of flanges (121) extend from two ends of the rear end part (101), the flanges (121) are respectively arranged corresponding to two ends of the front end part (201) of the rear window assembly (200), when the rear end part (101) is close to the front end part (201), the front frame body (120) is pressed against the rear waterproof strip (230), and the flanges (121) respectively cover the rear waterproof strip (230) and the convex parts (310).

本发明提供一种汽车天窗防水结构，其包含前窗组件(100)、后窗组件(200)及一对窗口侧框条(300)。前窗组件(100)具有前玻璃面板(110)以及前框体(120)，前框体(120)设置于前玻璃面板(110)的周缘，且前窗组件(100)具有后端部(101)。后窗组件(200)具有后玻璃面板(210)以及后防水条(230)，后窗组件(200)具有一对侧缘(202)以及连接在该对侧缘(202)之间的前端部(201)，后防水条(230)圈绕设置于该对侧缘(202)及前端部(201)。窗口侧框条(300)分别设置邻接于后窗组件(200)的各侧缘(202)，且各窗口侧框条(300)分别具有向后端部(101)延伸的凸部(310)。后端部(101)的两端延伸出一对凸缘(121)，对凸缘(121)分别对应后窗组件(200)的前端部(201)的两端配置，当后端部(101)接近前端部(201)时，前框体(120)抵压后防水条(230)，且各凸缘(121)分别覆盖后防水条(230)及各凸部(310)。