A streetlight module includes a lens assembly, a sealing ring, a heat-conducting baseplate and a heat dissipating assembly; the lens assembly is mounted in the front side of the heat-conducting baseplate, and the sealing ring is mounted between the lens assembly and the heat-dissipating assembly such that a sealed space is defined between the lens assembly and the heat-conducting baseplate; a plurality of LED lights are provided on the heat-conducting baseplate; the LED lights are positioned inside the sealed space and are electrically connected to the input end of the power supply; the heat-dissipating assembly is on the back side of the heat-conducting baseplate. The present invention has good heat-dissipating and waterproof performance with high efficiency, as well as long lifetime. Fig. I Fig. 2
