The invention provides a voltage collecting device suitable for an active power distribution network. The voltage collecting device comprises a battery pack. The battery pack comprises a plurality of battery cells connected in series, connection impedance is generated through series connection between the battery cells, the voltage collecting device further comprises a voltage collecting chip connected with the battery pack through a circuit, the voltage collecting chip is used for collecting voltage of each battery cell in the battery pack, the voltage collecting device further comprises an insulation impedance detecting circuit connected with the battery pack through a circuit, the insulation impedance detecting circuit is used for collecting contact impedance voltage of the connection impedance between the battery cells in the battery pack, the voltage collecting device further comprises a microprocessor connected with the voltage collecting chip and the insulation impedance detecting circuit. According to the voltage collecting device suitable for the active power distribution network, the voltage of each battery cell in the battery pack can be accurately collected both in the standing process and the charging and discharging process, and therefore the accuracy of the judgment of the performance of the battery cells can be improved.