The invention discloses a waterborne epoxy anticorrosive coating containing graphene and a preparing method and application thereof. The waterborne epoxy anticorrosive coating is prepared from, by weight, 5-30 parts of 1% oxidized graphene aqueous solution, 5-30 parts of ethyl alcohol, 0.01-0.04 part of hydrazine hydrate, 8-10 parts of silicon sources, 30-50 parts of filler, 33-35 parts of deionized water, 0.5-1 part of flash-rust resistance agent, 1-2 part of waterborne auxiliary, and 10-40 parts of waterborne epoxy hardener. The preparing method specifically comprises the following steps of S1, preparing graphene modified by silicon dioxide; S2, preparing waterborne epoxy emulsion modified by graphene; S3, preparing waterborne epoxy anticorrosive coating containing graphene. According to the waterborne epoxy anticorrosive coating containing graphene and the preparing method and application thereof, the compatibility of the waterborne epoxy anticorrosive coating in epoxy resin is improved, prepared graphene modified by silicon dioxide has the properties of an emulgator, and the epoxy emulsion can be emulsified and stabilized.