A Virtual Output Queue, VOQ, authorization management method comprising: according to a scheduling algorithm of a scheduler of a scheduling unit directly connected with a physical port and according to weight and priority of a scheduling unit at next scheduling level of the scheduling unit, determining an index of the scheduling unit at the next scheduling level; acquiring preset scheduling linked list information of each scheduler of the scheduling unit at the next scheduling level according to the index of the scheduling unit at the next scheduling level, and determining an index of a scheduler to be authorized corresponding to a same service priority with current authorization in the scheduling unit at the next scheduling level according to the preset scheduling linked list information until an index of a VOQ to be authorized corresponding to the same service priority with the current authorization is determined; and transmitting the current authorization from the physical port to the VOQ corresponding to the index of the VOQ to be authorized level by level according to the index of the scheduler to be authorized and the index of the VOQ to be authorized, wherein a service priority refers to a priority of a service data stream in queue for resource occupation in a packet data transmission network, wherein the preset scheduling linked list information comprises information on a state of a linked list of the scheduler, the linked list of the scheduler is empty when there is no scheduler or VOQ in the next scheduling level of the scheduler, and authorization is distributed to the scheduler only when the linked list is in a nonempty state. according to a scheduling algorithm of a scheduler of a scheduling unit directly connected with a physical port and according to weight and priority of a scheduling unit at next scheduling level of the scheduling unit, determining an index of the scheduling unit at the next scheduling level; acquiring preset scheduling linked list information of each scheduler of the scheduling unit at the next scheduling level according to the index of the scheduling unit at the next scheduling level, and determining an index of a scheduler to be authorized corresponding to a same service priority with current authorization in the scheduling unit at the next scheduling level according to the preset scheduling linked list information until an index of a VOQ to be authorized corresponding to the same service priority with the current authorization is determined; and transmitting the current authorization from the physical port to the VOQ corresponding to the index of the VOQ to be authorized level by level according to the index of the scheduler to be authorized and the index of the VOQ to be authorized, wherein a service priority refers to a priority of a service data stream in queue for resource occupation in a packet data transmission network, wherein the preset scheduling linked list information comprises information on a state of a linked list of the scheduler, the linked list of the scheduler is empty when there is no scheduler or VOQ in the next scheduling level of the scheduler, and authorization is distributed to the scheduler only when the linked list is in a nonempty state.