The invention belongs to the technical field of computer networks, and specifically relates to a flow balancing method and device of downlink node information sensing. The method comprises the following steps: collecting downlink node flow information; updating flow information features of a present node; adjusting the flow; and performing periodical interface on uplink and downlink node information. The device comprises a flow information collection module, a data analysis module, a flow adjustment module, a resource management database and an information notification module. Compared with the prior art, the invention has the advantages of high flexibility, good adaptability and high quality of service. By adoption of the flow balancing method and device provided by the invention, the flow of the present node can be adjusted by downlink node information sensing under the condition of satisfying network service resource constraints, the network congestion is avoided in a flow pre-deceleration mode, and the utilization rate of the network resources is improved while realizing network flow load balancing.