The invention provides an anti-fall graphene lacquer and a preparing method thereof. The anti-fall graphene lacquer is prepared from, by weight, 20-35 parts of emulsion, 3-5 parts of hydroxyethyl cellulose, 7-12 parts of graphene, 65-80 parts of natural colorful sand, 0.8-1.4 parts of antifoaming agent, 0.5-1.5 parts of adhesion promoter, 0.5-1 part of thickening agent, 5-10 parts of coalescing agent, 1-2 parts of N-aminopropyl-methylethanolamine and 25-45 parts of water. By adding graphene in the composition, hydroxyethyl cellulose is compounded with graphene, the softness and adhesion of thelacquer are improved while the agglomeration problem of graphene is solved, and the compactness of the lacquer coating is improved, so that after the lacquer is used for a long time, the phenomena like stripping and bubbling are not generated.