The invention relates to the field of lamps, in particular to an LED lamp. The LED lamp comprises a fixing structure, limiting structures, LED lamp bodies, a sealing structure, a flow guide structure,a protecting cover, a wire distributing hole, a cooling structure and a wire. The fixing structure used for installing the lamp is provided with the cooling structure and the LED lamp bodies. The fixing structure and the protecting cover used for preventing dust are sealed through the sealing structure. The multiple limiting structures are distributed on the fixing structure in a circumferentialarray manner. The flow guide structure used for guiding gas in the cooling structure abuts against the protecting cover. According to the LED lamp, the limiting structures on the fixing structure areused in cooperation with the flow guide structure, the flow guide structure and the protecting cover are conveniently and temporarily fixed in the process of detecting and maintaining the LED lamp, and then the quality and the efficiency of detecting and maintaining are greatly improved; and the flow guide structure is used in cooperation with the fixing structure, the noise of the cooling structure during using is effectively lowered, meanwhile, the hurt to users from the cooling structure is effectively prevented, the using safety performance is improved, and the space utilization efficiencyis improved.