Disclosed is a degumming agent which is composed of alcohol, acid, colliquefaction agent, surface active agent, osmotic agent and water, wherein the alcohol refers to 30.0-50.0 w% aliphatic alcohol, the acid is 0.5-3.0 w% saturated fatty acid with C9-C16 linear chain, the colliquefaction agent is 3.0-9.0 w% aliphatic alcohol and monoether, the surface active agent refers to 4.0-9.0 w% anion and nonionic, and the osmotic agent is 0.0-2.0 w% JFC-2. The process of employing the degumming agent to remove clearcole and self-adhesive paper placed on the surface of plastics is that the degumming agent is heated to 40-60 DEG C, the plastics of which the adhesive is ready to be removed are mixed in the degumming agent for 10 minutes, enabling the contact between the adhesive and the degumming agent to achieve best degumming effect. The degumming agent of the invention has relatively high degumming capability and no damage to the surface of the plastics, and also has the advantages of low cost, innoxiousness, non-toxicity, no flammability, environment preservation, convention and safe utilization. Further the degumming agent can be used repeatedly.