The invention discloses an identity authentication protocol selection method in a wireless network. The identity authentication protocol selection method in the wireless network comprises the steps that the weight of importance of security, the weight of importance of energy consumption and the weight of importance of authentication time are set by a user, the applicability of each identity authentication protocol in the wireless network is calculated according the weights of importance, and an identity authentication protocol with high applicability is selected. According to the identity authentication protocol selection method in the wireless network, the characteristics, such as authentication delay and identity protection, of the identity authentication protocols in the wireless network are fully considered, a targeted authentication protocol selection method is designed. From the point of view of users, several elements, mostly concerned by the users, such as the security of the protocols, the energy consumption, the authentication time and the user preference are considered comprehensively, and a solution capable of meeting the individual requirements of the users is provided.