The invention relates to a lead-carbon battery grid with a three-dimensional structure prepared by an electroplating method. With foam metal as a framework, a lead protective layer is electroplated ona surface of a foam metal framework, and the surface and holes of the foam metal are filled with an electrode active material, and the foam metal is foam nickel, foam copper, and foam aluminum. The prepared novel lead-carbon battery grid with the three-dimensional structure has excellent electrical conductivity, the limitation on a grid material is broken, and metal with poor acid resistance andgood conductivity and light weight and other alloy can be applied to a lead-carbon battery according to a method. At the same time, the amount of the active material is increased, the internal resistance of a carbon negative electrode is greatly reduced by a formed conductive three-dimensional network structure, the development of the capacitance performance of the carbon negative electrode is facilitated, the power density and energy density of the battery are raised, and the life of the battery is greatly improved.