The energy transmission efficiency is a key parameter to evaluate performance of the fuze electromagnetic inductive setting system. In this paper, an approach is studied to analyze the energy transmission efficiency of the fuze inductive setter based on microwave network scattering parameters. The insertion loss of the inductive setting circuit is obtained by this approach with MATLAB, which is consistent with the simulation of HFSS. A near-field inductive setting system is developed with this approach, in which its insertion loss is gained through experiments. To this system, MATLAB and HFSS simulation results as well as experimental outcome are proved to have good consistency with each other through comparative analysis, thus accuracy and reliability of this approach is verified.