Abstract: The explosive magnetic generator of frequency is a simple and small device for generating and radiating electromagnetic pulse. To optimize its performance, the mathematical model is researched first, and then the Bessel function which meets the output signal requirement is obtained. The output signal mode and the circuit energy distribution under different electrical parameter are analyzed. The research result shows that when the product of the time during which the inductance changes to 1/e of its initial value and initial carrier frequency is large enough, the output signal of the generator is the oscillation mode. The larger the product is, the higher the carrier frequency is and it is beneficial to the radiation.