The embodiment of the utility model discloses waterproof, dustproof and damp -proof lamp, include: lamp shade, lamp body and sealing strip, wherein, be provided with the clamping part on the lamp shade, the clamping part is including two barb structure, be provided with the draw -in groove on the lamp body, the notch department of draw -in groove be provided with with the stop part that the cooperation of two barb structure was used, wherein, in the draw -in groove, the clamping part passes through the notch gets into the draw -in groove with the sealing strip extrudees each other under the effort of sealing strip, two barb structure with the stop part offsets, in order to connect the lamp shade with the lamp body will the notch is sealed. The embodiment of the utility model provides a technical scheme has improved the leakproofness of junction between lamp body and the lamp shade, prevents effectively that external substance from getting into, has reduced externally to have corrosive material and dip the notch to the probability of waterproof, dustproof and damp -proof lamp's erosion, has prolonged waterproof, dustproof and damp -proof lamp's life.