The invention belongs to the technical application filed of constructional engineering, in particular to a method for improving the apparent mass of clear concrete by utilizing wood fiber paster. The invention aims to improve the apparent mass of clear concrete and prepare clear concrete with good apparent effect. In the invention, natural fibers such as cotton pulp, wood pulp and the like are selected to be as raw materials to be processed into wood fiber paster the molecular chain of which has micro permeability, is similar to semipermeable membrane, has strong resistance on oil solvent, basic solvent and organic solvent, has no generation of static electricity and strong easy decomposability, does not self-absorb dust, is not deformed under high temperature of 190 DEG C, and does not pollute environment. The paster has good air permeability, flexibility and strength and excellent crocking resistance, thus eliminating bubble on the surface of concrete, and reducing bubble quantity on the interface of the concrete and template paster and on the surface of the concrete so as to improve the apparent mass of clear concrete.