A backlight module and a liquid crystal display (LCD) both have a heat conductive structure for reducing the non-uniformity phenomenon of display. The backlight module comprises a frame, a reflective sheet, a heat-conductive plate, and a circuit board, wherein the frame has a bottom portion and at least one substantially step-typed through hole is formed therein. The reflective sheet is disposed on the inner surface of the bottom portion, and the heat-conductive plate is disposed in the step-typed through hole, and is spaced from the reflection sheet at a predetermined distance. The circuit board is disposed on the outer surface of the bottom portion of the frame, and has at least one electrical component that is received in the substantially step-typed through hole.