Abstract: Experimental study was conducted on random walk algorithm for power/ground（P/G） network.Compared with the traditional PCG approach,random walk is much faster when solving several nodes,but it is slow for transient analysis of huge P/G network.By analyzing the adjoint network using the modified random walk process,a new method is proposed for P/G network sensitivity computing.The experimental results show that the runtime of our proposed method is fast and the relative error is acceptable.