The invention discloses phenol aldehyde epoxy paint with lasting electrical conductivity and a preparation method thereof, and belongs to the paint field. The phenol aldehyde epoxy paint comprises a component A and a component B, wherein the component A consists of the following components in percentage by mass of 20-60% of epoxy resin, 3-20% of phenol aldehyde epoxy functional modifier, 3-15% of reaction type epoxy diluents, 4-25% of solvent, 0.1-1% of anti-foaming agent, 2-10% of rust-proof pigment, 0.1-2% of coupling agent, 0.5-3% of functional thixotropic agent, 25-67% of modifying filler; the component B consists of the following components in percentage by mass of 97-99.5% of amine curing agents, 0-20% of solvent, 0.5-3% of coupling agent. Mass solids of the phenol aldehyde epoxy paint disclosed by the invention are over 95%, so that solid content is high; moreover, the rust-proof pigment is partly added for being used as rust-proof paint, and therefore, the phenol aldehyde epoxy paint has relatively good fog mist resistance and seawater resistance, satisfies interior-exterior anticorrosive coating, and the like of the conventional ship industry and the chemical plant, has relatively high performance for resisting chemical media such as acid-base, and the like, and particularly has thermal acid-base resistance.