Based on the previously presented model of space-time, the structural features of elementary particles formation are considered. The paper investigates the model of elementary particles formation composed of such fundamental particles as loveton, electron, neutrino, and their an-tiparticles. In this paper, a set of basic particles is selected from among the simplest composite elementary particles, followed by a consideration of the ways of their decay, allowing the es-timation of the masses and binding energies of fundamental particles. Formulas to calculate the masses of elementary particles have been obtained, and, based on the proposed algorithm and the developed program, mass spectra of both hadrons and leptons have been calculated. Struc-tures of the τ-lepton and proton have been determined, and a possible reason for proton stabil-ity has been revealed. The difference between hadrons and leptons, mesons and baryons is ex-plained. Comparison of the calculated data on the masses of elementary particles obtained ex-perimentally showed good agreement with the available empirical data. This fact confirms the validity of the procedure for the formation of composite particles based on the construction of mass formulas for their decay and shows the high efficiency of the proposed approach. Com-parison of hadrons and leptons allowed us to propose a hypothesis about the possible nature of the strong interaction by considering electron-positron pairs as electric dipoles.