Network congestion control method and related device

Provided are a network congestion control method and a related device, the method comprising: a network device sending a plurality of messages of a first data stream through a plurality of paths, each of the plurality of paths being configured with a credit, the credit indicating a capacity of each path for sending data, the sum of the credits of the plurality of paths is less than or equal to a congestion threshold maintained by the network device for the first data flow; the network device receives first feedback information including information indicating whether a first path is congested, the first feedback information being feedback information of a first message in the plurality of messages, and the first path being a path for sending the first message in the plurality of paths; the network device re-determines the credit of the first path based on the first feedback information; the network device re-determines the load amount of the first path based on the credit amount of the first path. According t