The invention relates to a method for implementing QoS management of a group of specific flows, and its kernel comprises: firstly, in the next-generation network (NGN) structure, service control layer sends a resource request to carrying control layer, where the resource request message carries flow relation indication information for indicating the relation between service flow corresponding to the request and other service flows; then, the carrying control layer makes resource policy decision on the service flow according to the flow relation information and specific flow information and issuing the resource policy to data carrying layer, and the data carrying layer manages QoS of the service flow. And it adds flow relation information into flows with specific relation, and RACS explains the flow relation information and controls service flows according to the flow relations, implementing QoS control and management and saving network resources.