An authentication associated suite discovery and negotiation method for ultra wide band network. The method includes the following steps of: 1) adding a pairwise temporal key PTK establishment IE and a group temporal key GTK distribution IE in an information element IE list of an initiator and a responder, and setting a corresponding information element identifier ID, and 2) an authentication associated process based on the authentication associated suite discovery and negotiation method. The authentication associated suite discovery and negotiation method for ultra wide band network provided by the present invention can provide the discovery and negotiation functions of a security solution to the network so as to satisfy all kinds of application requirements better when multiple pairwise temporal key PTK establishing plans or multiple group temporal key GTK distributing plans co-exist.