Abstract: In order to reduce discharge delay jitter of all solid state magnetic pulse compression discharge circuit for pulsed gas laser, the circuit was simulated with the pspice software including the full process of charging, magnetic switch resetting and discharging. The simulation results show that 1V jitter of initial storage capacitor voltage causes 5ns~10ns jitter of discharge time and the discharge jitter decreases with the increase of the charging voltage. It was found in experiments that the discharge jitter can be reduced from s level to ns level by applying a special two-stage coupled resetting circuit. The results show that the key to reduce the jitter is that the magnetic cores can be reset to a steady state with high frequency alternating current (AC) ripple in the process of charging through the resetting circuit so that the magnetic switches and saturable transformer can work more steady. The simulation model can provide a reference to the design of low jitter pulsed discharge circuits.