Abstract:Background. This work is devoted to inverse problem of integrated conductivity reconstraction by waveguide method. The aim of study is to approbation of the numerical-analytical method for solving inverse problem. Materials and methods. We consider inverse problem: inverse problem of complex permittivity reconstruction of one-sectional diaphragm. The problem is devoted to the boundary value problem for Maxwell's equations. Results. The numerical-analytical method is tested. We consider some series of examples. Numerical results show that we can use numerical-analytical method in practice effectively. Conclusions. The numerical method for rec of complex conductivity and numerical results can be used in practice to reconstruct electromagnetic characteristics of modern materials.