The invention relates to a pigment drying device comprising a drying oven; a plurality of layers of conveying belts for conveying pigment along a horizontal direction are alternately arranged in the drying oven from top to bottom; the conveying belt locating on the lower layer can be used for receiving pigment falling from one end of the conveying belt on the layer above the lower layer; the upper part of each layer of conveying belt is uniformly provided with a plurality of spreading and drying structures at intervals along the conveying direction of the conveying belt; each spreading and drying structure comprises a support frame, a drying plate and spreading hooks; the upper end of the support frame is connected with the drying plate; the lower surface of the drying plate is provided with electric heating equipment for drying pigment on the conveying belt located below the drying plate; and the lower surface of the drying plate is also provided with the plurality of spreading hooks used for spreading the pigment on the conveying belt located below the drying plate to increase the heated area. The pigment drying device has the beneficial effects that due to the adoption of the structure of the plurality of layers of conveying belts in the drying oven, continuous feeding and discharging and continuous drying operation can be realized; and due to the arrangement of the spreading and drying structures, the pigment can be scratched on the conveying belts by the spreading hooks to form grooves, the heated area and the water vapor diffusion area can be increased, and the drying efficiency can be greatly increased.