The utility model relates to a steel plate with a low-corrosion-extending composite anticorrosive coating. The steel plate with the low-corrosion-extending composite anticorrosive coating comprises a steel plate, an inorganic zinc-rich shop primer coating, a low-corrosion-extending epoxy priming coating, a high solid seepage-proofing epoxy coating, and a high solid wear-resisting long-acting epoxy face coating, wherein the inorganic zinc-rich shop primer coating, the low-corrosion-extending epoxy priming coating, the high solid seepage-proofing epoxy coating, and the high solid wear-resisting long-acting epoxy face coating are successively attached to one side surface of the steel plate. Welding edges are reserved on four edges of the inorganic zinc-rich shop primer coating. A weldable temporary rust-proofing thin coating is attached to the other side surface of the steel plate. One face of the steel plate has the advantages of having salt-fog-resistance, low-corrosion-extending, welding non-mouth-repairing, and long-acting seawater corrosion resistance. The coatings on the other face of the steel plate has the advantages of having direct welding temporary rust-proof and multi-class surface layer matching usability and is used for manufacture of ballast tanks such as platforms and ships, or oil tank baseboards.