The present invention discloses a breaker fracture dynamic voltage distribution measurement wiring loop and measurement method. A power system consisting of a short circuit generator, a transformer and auxiliary devices thereof and a high-voltage capacitive load are employed to apply power frequency alternating voltage and direct current voltage at the same time at the two ends of the fracture in the process that the breaker cuts a filter, and a plurality of general high-voltage bleeders are accessed to measure and record the voltage waveforms of the relevant feature points of the breaker so as to reach the purpose of measuring the voltage alternating and direct current distribution conditions of the breaker among fractures in the work condition of the alternating and direct current superposition; and moreover, the parallel high-voltage resistance equivalent pollution grade method is employed to measure the voltage alternating and direct current distribution condition of the breaker fracture in the pollution state.