An automatic-lighting LED lamp for a drawer comprises a main box provided with a battery bin and a circuit board storing bin, the battery bin and the circuit board storing bin are arranged on the upper end face and the lower end face of the main box respectively, and a plurality of LED beads are mounted on a circuit board and are controlled by a control system to work. The LED lamp is characterized in that the surface of the circuit board is further covered by a hood which is fixedly connected with the main box in a bucking mode through a plurality of first buckles, through holes corresponding to the LED beads are formed in the hood, and after the hood is fixed, the LED beads extend out of the hood from the through holes; the surface of the battery bin is covered by a bottom cover which is fixedly connected with the main box in a buckling mode through a plurality of second buckles. The automatic-lighting LED lamp of the drawer has the advantages that the lamp is mounted in a buckling mode without screws, assembling is convenient in production, and production efficiency is high; a light-operated switch, or a mechanical touch switch or a vibration switch is used for controlling the LED lamp to work, the drawer can be lightened automatically after being opened, a user can clearly see objects in the drawer, and user operation is facilitated.