The present invention provides a resource and admission control method applied to nomadicity and wholesale scenarios, which clarifies an interaction process between a PD-FE of a NGN home operator/NGN retail service provider and a PE-FE of a NGN home operator/NGN retail service provider, puts forward a resource request process, resource modification process and resource release process of the resource and admission control method applied to the nomadicity and wholesale scenarios, and solves problems existing in the related art.