The invention relates to a waterproof LED wall washer with a danger power-off structure. The wall washer comprises a pedestal and a first sliding block, a dovetail groove is formed in the pedestal, a sliding way is arranged on the left side of the dovetail groove, the first sliding block is installed on the left side of the sliding way, a rotary knob is arranged on the left side of a first conical surface, a second sliding block is arranged on the left side of the rotary knob, and a second conical surface is arranged on the left side of the second sliding block. The LED wall washer has the beneficial effects that the LED wall washer is provided with a sliding rod, a spring, a sliding cavity, a first pin shaft, a connecting rod, a second pin shaft, a clamping jaw, a clamping block and a limiting groove, so that quick power failure in danger can be conducted, the LED wall washer is provided with a cover plate, oblique teeth and a limiting strip, the LED wall washer is waterproof, meanwhile, the LED wall washer is provided with a lamp body, a hinge shaft, a second conical surface, a second sliding block and a rotary knob, thus the LED wall washer can be adjusted, the LED wall washer is provided with a first sliding block, a first conical surface, a rotary knob and a dovetail groove, the LED wall washer is safer, and a through hole, a sleeve, saw teeth, a bolt, a gasket and clamping teeth are further arranged, so that the installation is stable.