The invention relates to a large-power LED radiator which is formed in a way that three annular heat radiating pipes surround a central heat radiating base; rectangular heat radiating fins with a plurality of radial lengths are evenly distributed in a circumferential direction between the central heat radiating base and the outermost layer of heat radiating pipe. In the invention, by adopting thecombination of a plurality of heat radiating units and carrying out the optimized option on the sizes of all parts, the large-power LED radiator is made of a pure aluminum material with high conductance on the basis of aerodynamic principles, therefore, the large-power LED radiator can be matched with a single or a plurality of large-power LED light sources, effectively and quickly dissipate heatgenerated by devices with very evident heat radiating effect; and meanwhile, the large-power LED radiator also solves the problem of overhigh junction temperature of LEDs and can remarkably prolong the service life of the LEDs, stabilize the quality of the LEDs and reduce emission decay of the LEDs, and the like.