The purpose of this study is to discuss the electrical propulsion system using wire explosion phenomenon. The pulsed electrical propulsion system is using produced expansion gas as a result of exploding metallic wires using a high-voltage. This paper evaluated pulse electrical propulsion system by fundamental experiment using aluminum wire. The experiment was using power supply unit of 220 voltage and 680-6120μF. In this result, the max impulse bit was about 8400μN-sec, the specific impulse was about 8100 sec.