The invention discloses an LED (Light-Emitting Diode) lamp module radiator, and relates to the field of lamp accessories. The LED lamp module radiator comprises a lamp holder template, wherein an LED lamp panel is arranged on one side of a lamp holder, a heat-dissipating substrate is arranged on the other side of the lamp holder template, a groove is formed in the heat-dissipating substrate, the groove is provided with radiating fins which are 3-5 millimeters thick, the heat-dissipating substrate is provided with two L-shaped heat-dissipating posts, the heat-dissipating substrate is further provided with a heat-dissipating pipeline, the heat-dissipating pipeline is filled with cooling liquid, the heat-dissipating pipeline is connected with a liquid storage tank, the liquid storage tank is provided with an air vent hole, and the liquid storage tank is further provided with a transparent window. The LED lamp module radiator has the advantages of reasonable structure, novel design, safety, reliability, environmental friendliness, less energy consumption, good heat-dissipating effect and easy application and popularization, adopts two natural cooling ways, liquid cooling and air cooling, for dissipating heat, and does not consume additional power.