Disclosed are a configuration information transmission method, a central unit (CU) and a distributed unit (DU), and a computer storage medium, for use in reducing system overheads. The configuration information transmission method: includes a CU of a radio access network (RAN) receives a first interface message from a DU of the RAN, wherein the first interface message carries first indication information, the first indication information is used for indicating at least one terminal device, and a bandwidth part (BWP) currently activated by the at least one terminal device is not configured with a common search space (CSS).