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 side plate (84) includes a coupling section (842) projecting toward the mount section (284). The coupling section (842) is coupled to the mount section (284) so as to couple the front bezel (8) and the heat dissipation board (28) together.