The Su-Schrieffer-Heeger Hamiltonian and the Hubbard Hamiltonian within the unrestricted Hartree-Fock scheme have been used to study the effects of e-e interaction on lattice distortions and electronic structures of $C_{60}^{-}$, $C_{60}^{2-}$, $C_{60}^{+}$, $C_{60}^{2+}$. When the interaction parameter increases from 0 to 3 eV, the bond variables of the C₆₀ molecules are altered slightly, but the polaron energy levels and the charge density distributions of the C₆₀ molecules are modified seriously.