Color coated steel plate is cold-rolled steel plate and galvanized steel plate as the substrate, after surface pretreatment (degreasing, cleaning, chemical conversion treatment), in a continuous way coated with paint (roll coating method), after baking and cooling products. Coated steel plate has light weight, beautiful appearance and good anti-corrosion performance, and can be directly processed, it provides a new type of raw material for the construction industry, shipbuilding industry, vehicle manufacturing industry, home appliance industry, electrical industry, etc., has played a good effect of replacing wood with steel, efficient construction, energy saving, pollution prevention and so on.