This paper has investigated the electric pulse over the low-impedance load（19 Ω）generated by the pulse transformer driven by the electric exploding wire（EEW）.It has built a lump-parameter circuit model by the Ansoft Simplorer 7 code to simulate the circuit behavior and got the simulation results which agree with the experimental results well.The preliminary investigation shows that the pulse transformer driven by the EEW is impossible to generate super-high voltage pulse on lowimpedance load

but the transformer can extend the pulse width obviously.This behavior has the potential to be used in the situation which needs long width pulse.