In this paper,the matte agent and the auxiliary agent are firstly used by physical mixing.In the process of preparing the topcoat varnish,the stability of the matte varnish in the formulation is further improved by preparing the matte paste in advance.The matte principle of matte agent was discussed theoretically.The effects of matte agent,emulsion,thickener system,and dispersant on the varnish were studied.The results indicate that the prepared overcoat varnish has 8%stain resistance,2.8 mL water permeability,gloss of 1.3%,3.1%,4.7%,and also exhibits better coating performance.