The invention relates to the technical field of communication methods, and more particularly to an authorized network and cognitive network pairing cooperation method based on an alliance game. The method comprises the steps of dividing a pairing scheme between a logical channel and a user alliance and between an authorized user and a cognitive network user, and establishing a stable paired cooperative game model and a pairing algorithm. The combination of underlay and overlay wireless resource sharing ensures the stability of a system while ensuring the communication capacity; compared with an optimal algorithm for sacrificing personal interests to maximize the throughput of the system, the method allows a cognitive user individual to selfishly choose a user alliance for maximizing personal interests; from the perspective of fairness and efficiency, the method can satisfy the ideal state of the Pareto optimal criterion, that is, any change of a user does not improve the communicationcapacity of some cognitive users on the premise that the communication capacity of the cognitive users participating in sharing wireless resources is not reduced.