Based on quantum game theory of single coin,combing with classical XNOR Gate, the definition of quantum one is achieved. Furthermore, the model of single-coin quantum theory is proposed to realize quantum XNOR Gate theoretically. Comparing the quantum logical bit with the classical logical one,we have acquired the method of the specific operations, that is, the logical function of quantum XNOR gate can be acted as the quantum game process of two separate quantum coins.