This coated steel plate is provided with: a base steel plate; a galvanization layer formed on the base steel plate; a zinc phosphate film formed on the galvanization layer and containing zinc phosphate crystals, the zinc phosphate film being deposited in the amount of 0.4-2.5 g/m2; a lower-layer film which is an inorganic film or an organic/inorganic composite film, formed on the zinc phosphate film and deposited in the amount of 50-2000 mg/m2; and an upper-layer film formed on the lower-layer film, the upper-layer film having a film thickness of 2.0-10.0 [mu]m and containing 5-25% by mass of a first carbon black; the maximum gap between the zinc phosphate crystals at the interface of the galvanization layer and the zinc phosphate film being 0.2 [mu]m or less.