The present invention provides a curved liquid crystal display device, which includes: a backlight module (2), a mold frame (4), a liquid crystal display panel (6), and a front bezel (8). The backlight module (2) includes a backplane (22), a curved light guide plate (24) arranged in the backplane (22), a backlight source (26) arranged in the backplane (22), and a heat dissipation board (28) receiving the backlight source (26) mounted thereto. The heat dissipation board (28) includes a bracket section (282) and a mount section (284) connected, in an inclined manner, to the bracket section (282). The bracket section (282) is mounted to the backplane (22). The backlight source (26) is mounted to the mount section (284). The front bezel (8) includes a front plate (82) and a side plate (84) connected to the front plate (82). The mount section (284) includes a mounting tab (286) extending therefrom toward the side plate (84). The mounting tab (286) is coupled to the side plate (84) so as to couple the front bezel (8) and the heat dissipation board (28) together.