In order to meet the demands of the distributed generation system for converting low direct current（DC）input voltage from solar，fuel cell and battery to high output voltage，a novel Boost converter topology with a charge pump capacitor and double inductors based on the traditional Boost converter is proposed.The proposed converter realizes the high voltage gain under low duty cycle by charging through the inductors and capacitor in parallel and discharging through the inductors and capacitor in series.The operation principle and steady-state analysis are provided in three different inductance conditions.Finally，the results of the analysis are verified by simulation.