The invention provides a polling-based packet queue output scheduling method, which comprises the following steps of: pre-processing, to construct a two dimensional dynamic scheduling table which comprises a plurality of lists; scheduling table processing, which comprises the following steps: for any packet flow, when a data packet in the packet flow needs sending, based on the data sending of current carousel, the sending carousels of a first data packet are confirmed according to the corresponding sending share in each carousel of data sending pre-distributed to the packet flow and the length of the first data packet which needs sending at first in the packet flow, and then the corresponding lists are confirmed based on the carousels confirmed; in addition, if the scheduling table corresponding to the packet flow does not exist in the lists confirmed, the scheduling table corresponding to the packet flow is added in the lists confirmed; and polling, each list of the two dimensional dynamic scheduling table is polled in sequence, wherein the data packet which needs sending at first in the packet flow to which the scheduling table corresponds is sent when any scheduling table in any list is polled.