The present disclosure relates to data distribution methods. One example method includes receiving an access policy, where the access policy includes flow description information, quality information of at least two links, and a data distribution policy on the at least two links, receiving a service data flow, and in response to determining that the access policy includes flow description information of the service data flow, determining link quality information of a link used for transmitting the service data flow, and distributing the service data on the link according to the data distribution policy, where the data distribution policy is a data distribution policy that is determined based on the access policy and that is corresponding to the link quality information and the flow description information of the service data flow.