The invention provides a small modularized resistance-capacitance divider comprising an equalizing ring 1, a modularized resistor 2, a modularized distributed capacitive post 3, a modularized low voltage measurement system 4 and a base 5. The equalizing ring 1, the modularized resistor 2, the modularized distributed capacitive post 3, the modularized low voltage measurement system 4 and the base 5 are connected in turn. The modularized distributed capacitive post 3 is packaged in an organic glass shell 3-2. The modularized distributed capacitive post 3 is composed of multiple high voltage capacitors 3-1 through series connection, and the upper and lower ends 3-3 and 3-4 are metal covers. The modularized low voltage measurement system 4 is installed on the metal base 5. According to the small modularized resistance-capacitance divider, a modularized structure is adopted so that the divider is enabled to be simplified in structure and reduced in size and convenient for disassembling, adjustment and replacement of single modules, the measurement range of the divider is enabled to be easy to change to meet different experimental requirements, and disassembling, repair and maintenance are facilitated when faults occur.