To increase the production of unconventional oil and gas fields, the electric pulse resonance technology of reservoir was studied. The natural frequency of the reservoir was detected by electric pulse, and the discharge frequency was adjusted quickly and accurately by voltage and current loop. A prototype of the resonance stimulation device was developed for field operation, a preliminary construction process was formed, and field experiments were carried out. The results show that the impact range of the shock wave can reach 400-500 m, and the improvement effect of the reservoir fracture is obvious. The application prospect of the device is very broad.