Abstract: Plasma channel drilling is a new drilling technology that makes use of the plasma channel to produce pulsed high-voltage discharge inside the rock and break it ahead of the drill bit.The basic principle is to break rocks with the pulsed high-voltage discharge in liquid media.The experimental system designed by I.V.Timoshkin et al.from the University of Strathclyde,the testing results of plasma channel drilling technology as well as the principle and advantages of the Solid State Modulator developed in 2009 by J.Biela et al.from the Power Electronic Systems Laboratory are presented in this paper,the suggestion for further research of the new drilling technology was put forward to provide a novel idea and method for improving drilling rate and reducing cost.