The invention provides a broadband voltage transformer with resistance-capacitance parallel-serial topological units. The broadband voltage transformer comprises a hollow insulator, metal flanges, fixed flanges, a resistance-capacitance voltage sharing assembly, a high-voltage arm, a low-voltage arm and a base, wherein the high-voltage arm and the low-voltage arm are arranged in the hollow insulator; the metal flanges are mounted at two ends of the hollow insulator; the fixed flanges are mounted on the inner walls of the metal flanges; two ends of the resistance-capacitance voltage sharing assembly are respectively connected with the fixed flanges; the high-voltage arm comprises a multilevel serial resistance-capacitance parallel-serial topological unit; and the low-voltage arm comprises aone-level resistance-capacitance parallel-serial topological unit. The broadband voltage transformer provided by the invention is suitable for AC systems and DC systems, and is wide in application range which specifically covers DC transmission projects, AC transmission/distribution projects, high-speed railway grids and any field and occasion with broadband voltage signal measurement needs.