[en] The consideration is given to the two-dimensional massless four-fermion theory with several coupling constants in 1/N approximation. The model is asymptotically free. In this model, the dynamic violation of chiral invariance takes place and fermions acquire masses at any values of the coupling constants. Two different phases with massive fermions are shown to exist. The necessary and sufficient conditions for the theory to have no ghosts have been found. In the leading order over 1/N, bosons with two different masses are present in the theory