The invention discloses a method for the all-sided nickel plating of an electrolysis copper foil and a tab produced by applying the method, and belongs to the technical field of electrolysis copper foils. According to the method, both sides of the electrolysis copper foil are electroplated by adopting a special top anode plate; both an electrolysis anode plate and the top anode plate are prepared by utilizing titanium coated with iridium; and a pure nickel sulfate solution which is prepared by stirring analytical reagent nickel sulfate and analytical reagent boric acid serves as an electrolysis solution. By adoption of the above method, the problem that both sides of the electrolysis copper foil cannot be nickel-plated is effectively solved; the crystal structures of all-sided nickel-plated layers are dense and uniform, the distribution is orderly, and the thickness uniformity deviation is less than 0.01 [mu]m; both the tensile strength and the elongation reach the tab usage standard; the surface weldability is high; and the high-temperature-resistant and corrosion-resistant properties are good.