The invention discloses a dynamic operating threshold based efficient traffic control method. The dynamic operating threshold based efficient traffic control method specifically comprises the steps of determining to accept or refuse a connection request by a local communication management agent based on local information of each switch; when one connection request is accepted, modifying a virtual link arbitration table based on the connection request and setting an initial static operating threshold for each virtual link; recording an unexpected big data traffic in each link dynamically by each switch; maintaining respective dynamic threshold by each virtual link; and judging whether current shared links are idle by the virtual link arbitration table when the service traffic in one link reaches the operating threshold of the current link, and activating one shared link for transmission if idle shared links exist. The dynamic operating threshold based efficient traffic control method improves the processing capability for the unexpected big data traffic in the network, the bandwidth utilization efficiency and the transmission efficiency, and reduces energy consumption, packet loss probability and network delay.