The invention discloses a backlight module and a liquid crystal display. A frame, a circuit board and a back board of the backlight module are fixed through a first fixing member, meanwhile, a light guide board, the circuit board and the back board are fixed through a second fixing member, a light-emitting diode is arranged between the light-incident surface of the light guide board and the frameso that the circuit board of a light source module is restrained in the horizontal direction and the vertical direction, thereby solving the problems of easy bounce and deflection of the light-emitting diode and improving the phenomenon of nonuniform projection or light leakage of the light-emitting diode. Furthermore, the circuit board of the light source module is fixed and located without using an adhesive tape, thereby saving material cost, having compact structure and being conveniently assembled.