Solid glue is a solid glue made with animal glue, animal glue anticoagulant, fatty acid salt, solvent, and preservative as main raw materials. It can be used to paste various papers in the environment of -20°C to 40°C. The adhesive performance of the solid glue prepared after adding the synergist is obviously improved. The colored solid glue prepared by adding water-soluble dyes has many uses, such as flocking painting.