The invention provides an door radiating device for an LED lamp, comprising a lamp holder, a power interface arranged at one end of the lamp holder, a radiating chamber arranged at the other end of the lamp holder as well as a lamp body and a radiating structure which are connected with the radiating chamber and communicate with the lamp holder; one end, close to the radiating chamber, of the lampholder is provided with a circuit board; a lampshade is arranged at the upper part of the outer wall of the lamp body; substrates are uniformly arranged on the outer wall of the lamp body; lamp beadsare arranged on the substrates; a radiating slot is arranged in the lamp body; the radiating slot is a netting structure and closes to the inner wall of the lamp body; the radiating structure comprises radiating sheets and radiating columns penetrating through the radiating sheets; and the door radiating device for the LED lamp provided by the invention aims at solving the problems of poor radiation of the radiating structure in the current LED lamp and uneven lighting orientation of lamp beads.