A bearer configuration method and related products are disclosed. The method comprises: a first network device configures a bearer sequence number for at least one first bearer of a terminal, wherein the first bearer and at least one second bearer configured by the first network device for the terminal support a data duplication function, the first network device and a second network device provide dual connectivity (DC) transmission for the terminal, and a difference between a first bit to which a bearer sequence number of each first bearer is mapped and a most significant bit is greater than a difference between a second bit to which a bearer sequence number of each second bearer is mapped and the most significant bit.