The invention belongs to the technical field of material separation and discloses a wet material separation device. The wet material separation device comprises a machine case, a vibrating device anda screen plate, wherein the upper portion of the machine case is provided with a feeding port, and the bottom of the machine case is provided with a material discharging port; the vibrating device isarranged in the machine case, and is connected with a driving device outside the machine case; the screen plate is arranged on the vibrating device, and forms a 5-8 degree included angle with the horizontal direction; and a gap facilitating material sliding is formed between the peripheral edge of the screen plate and the inner wall face of the machine case. By means of the wet material separationdevice, small particle size materials after being dried can enter a dust remover and other devices from a dust outlet along with thermal loading gas, and separation of materials in different particlesizes is achieved.