The present disclosure relates to a backlight module and a liquid crystal display (LCD) device. The backlight module includes a light guide panel (LGP), and a backplane. The backplane includes sidewalls, and a bottom wall. The LGP is arranged in the backplane. The backlight module further includes fixing pieces. The LGP is configured with a first fixing hole, and the sidewall or the bottom wall of the backplane is configured with a second fixing hole. The fixing piece penetrates through the first fixing hole in the LGP and the second fixing hole in the backplane and fixes the LGP to the backplane. In the present disclosure, the LGP is fixed to the backplane through the fixing piece penetrating through both the first fixing hole in the LGP and the second fixing hole in the backplane thereby preventing the LGP from moving upwards and downwards in the vertical direction.