The evolution characteristics of the fidelity of quantum states for a V-type three-level atom interacting with the two-mode odd-even entangled coherent field are investigated. The influences of the detuning parameter, the two-mode light field intensity and the atomic distribution angle on the fidelity of quantum states are discussed by using numerical calculation. The results show that the nature of fidelity for the atom is better than that for the system and the field, the increasing of the detuning parameter or the initial field intensity can be a good help for increasing of the fidelity of the atom, and it is much better when the atom is initially in the ground state. The evolution frequencies of the fidelities are modulated by the detuning parameter. The quantum collapse and revival behaviors occur when the two-mode light field intensity is strong enough.