Abstract: To reduce damped oscillation in the existing short-arc pulsed xenon lamp power supply, this paper proposes a short-arc xenon flash lamp driving power supply design based on the flyback topology method and RC isolation trigger network. The driving power supply adopts 24 V input, the main voltage generates 700−1000 V continuously adjustable output through the flyback topology. The pulse trigger voltage circuit adopts a two-stage cascade boost circuit to produce 5−7 kV pulse output. The main voltage and the pulse trigger voltage pass through the RC isolation trigger network to drive the pulse xenon lamp. This paper designs and implements various modules of the drive power supply, compares the RC isolation trigger network simulation with the actual trigger waveform, and analyzes the charge and discharge waveforms of the main voltage at different voltages. The experimental results show that the driving power supply designed has a 100% success rate for lighting the short-arc pulsed xenon lamp, which verifies the feasibility of the designed driving power supply. The driving power supply has a longest total charge and discharge time of 5.63 ms, which can provide a high flashing frequency for short-arc xenon flash lamps. In addition, the driving power supply can reduce the damping oscillation range from 32.24% to 4.7%, effectively suppressing the damping oscillation caused by discharge, avoid recharging the energy storage capacitor, and effectively improve the discharge times and life of the energy storage capacitor and the short-arc xenon flash lamp.