The system thereof comprises: a scheduler, a classifier, a timer, a parameter inputting interface and a queue pool. Wherein, the timer outputs a clock signal with two cycles to the scheduler, and theparameter inputting interface outputs the scheduling parameters to the scheduler; the queue pool is composed of n queues. In the invention, when the next cycle starts and has not scheduled the last queue yet, then after completing the process of the current packet, the scheduling procedure will return to the previous step and restart; the parameters about the scheduling cycle, time slice cycle andwideband allocation ratio can be dynamically modified; the modified parameters is enabled at the beginning of the next scheduling cycle.