Abstract: The compact and miniaturization properties are playing a considerably important role in the high power ns pulse forming network. The components and characteristics of a two-node anti-resonance pulse forming network which generates square pulses is introduced and the equivalent circuit of this network is obtained. A method for designing parameters of this type of circuit is put forward by using the Laplace transform and the Fourier series expansion, and the corresponding simulation is carried out. The simulation results show that the flattop of the output pulse is about 1/4 of the whole pulse duration, while the rise time is about 1/7 and the pulse width is 5/7. Preliminary experimental investigation is studied and the results indicate that the two-node anti-resonance pulse forming network can generate ns square pulses which is in accord with the simulation results.