Abstract: The traffic reaching a certain destination address is commonly concentrated in the optimal route in current network，this results in that the utilization of network resource is unbalance，the network congestion can not be avoided，however，it is very difficult for traditional network architecture to implement traffic balance.By utilizing the cooperative ability of distributed computing of the active network nodes，the paper puts forwards a multi-path routing model of traffic balance，which includes the algorithms such as multi-path routing output traffic optimization allocation，optimization import bandwidth allocation，congestion restraint，etc.To achieve the balance configuration of traffic and resource.The experiment proves that this model improves utilization rate of network link and the performance of whole network，and avoids or reduces the occurrence of network congestion.