The invention discloses an electrical power system transient overvoltage acquisition system. The system comprises a condenser bushing, a voltage transducer, a secondary resistance-capacitance divider, a transducer, an amplifier and a correcting circuit, wherein the condenser bushing, the voltage transducer, the secondary resistance-capacitance divider, the transducer, the amplifier and a liquid crystal display screen are sequentially connected, the correcting circuit is in output connection with the secondary resistance-capacitance divider, a voltage signal which is output by the voltage transducer is transmitted to the secondary resistance-capacitance divider, the correcting circuit comprises a voltage doubling circuit and a waveform adjusting circuit, correction of the system can be achieved, the system reliability is improved, a voltage dividing system is a condenser bushing end screen voltage dividing system, the frequency response characteristic is good, errors caused when measurement of impulse voltage is performed can be greatly reduced, and real-time acquisition and monitoring of internal and external overvoltage can be achieved.