A light source module includes at least one light source emitting light, and a body supporting the light source. The body includes a heat sink supporting the light source on a top surface thereof, an electrical insulating part provided on the heat sink, and a plating part provided on the insulating part. The plating part includes a contact heat dissipation part contacting a portion of a bottom surface of the light source to receive heat generated from the light source, and a diffusion heat dissipation part connected to the contact heat dissipation part for receiving heat from the contact heat dissipation part to discharge the heat to the heat sink. Accordingly, quick heat dissipation is performed.