The invention relates to a large-power LED radiating structure. The large-power LED radiating structure comprises a shell, a radiating bottom plate attached to an LED heat source, heat-conducting pipes and radiating fins. The shell comprises radiating plates with radiating grooves; the radiating fins are arranged in a cavity defined by the shell; the heat-conducting pipes are divided into the first heat-conducting pipes and the second heat-conducting pipes; the first heat-conducting pipes are connected with the radiating bottom plate and extend in the axial direction in the radiating plates; and one ends of the second heat-conducting pipes are connected with the radiating bottom plate, and the other ends of the second heat-conducting pipes penetrate through the radiating fins. Compared with the prior art, according to the large-power LED radiating structure, heat on a radiating base is conducted to the radiating fins and the radiating plates on the shell of the radiating structure, andthe exchange speeds of hot air in the different directions are different, so that the radiating efficiency can be improved, and the natural convection radiating capability is promoted.