The invention relates to a cathodic disbanding resistant anti-corrosion epoxy coating and a making method thereof; bisphenol A epoxy resin, novolac epoxy and petroleum resin are added into a xylene and n-butanol mixed solvent, then wet sericite powder, barite powder, titanium dioxide, carbon black, fumed silica, an active diluent, a silane coupling agent, silicone oil and fluorocarbon modified polyacrylate are added for mixing, stirring and grinding to prepare an A component of the cathodic disbanding resistant anti-corrosion epoxy coating, cashew nut shell oil modified phenolic amine and modified aliphatic amine are mixed to prepare a B component, when in use, the A component and the B component are mixed; the cathodic disbanding resistant anti-corrosion epoxy coating has good compatibility with an electrochemical protection system, has excellent cathodic disbanding resistant performance and good adhesion, flexibility, sea water resistance and chemical resistance, and can be used for corrosion protection of splash zones and full immersion zones of ships, offshore platforms and marine steel structures and the like.