The recent advances of the "cut and try" method for solving the complicate non-linear network with constant flux are reviewed in the present paper.The network-transform method suggested by P. A. lonkin(who has solved some special non-linear networks by means of this method) is extended and applied to non-linear network however complicated.Some researches for optimum solving-plan when using this method is discussed in detail.In Appendix 1, the comparison of the network-transform method and the Kirchhoff''s equations-method suggested by Wang is given.In Appendix 2, the application of superposition theorem to a " mixed network" (containing not only non-linear elements but also the portion constructed by linear elements) is considered in a general case, where the network contains any number of non-linear elements.