A synchronisation method, characterized by comprising: determining (101, 301), by a control plane, CP, entity, content to be counted, an object and a reporting policy for performing a synchronisation operation, wherein the synchronisation operation comprises at least one of: a working status synchronisation operation or a resource status synchronisation operation; wherein the object for performing the synchronisation operation comprises at least one of: one or more DRBs, one or more PDU sessions, a UE, a plurality groups of UEs or a processing unit of a designated UP entity; and the reporting policy comprises at least one of: designated event trigger reporting, time period trigger reporting or periodic reporting triggered by a designated event; and sending (102, 302), by the CP entity, a request for the synchronisation operation to a user plane, UP, entity, wherein the request carries configuration information about the content to be counted, the object and the reporting policy for the synchronisation operation; wherein the configuration information about the content to be counted comprises: first configuration parameter information for analyzing and counting a working status of a user traffic data stream, and second configuration parameter information for analyzing and counting a working status and a resource status of a processing unit of the UP entity; wherein the first configuration parameter information comprises: uplink and downlink transmission rate information about a traffic data stream, uplink and downlink Quality of Service information about the traffic data stream, packet data convergence protocol, PDCP, serial number information about a downlink traffic data stream, security operation information about an uplink traffic data stream or PDCP data packet recovery information about the uplink traffic data stream; and the second configuration parameter information comprises: a baseband resource duty ratio of the processing unit, a baseband resource busy-idle ratio of the processing unit, fault information about the processing unit, a number of in-serving data radio bearers, DRBs, of the processing unit or a number of protocol data unit, PDU, sessions of the processing unit. determining (101, 301), by a control plane, CP, entity, content to be counted, an object and a reporting policy for performing a synchronisation operation, wherein the synchronisation operation comprises at least one of: a working status synchronisation operation or a resource status synchronisation operation; wherein the object for performing the synchronisation operation comprises at least one of: one or more DRBs, one or more PDU sessions, a UE, a plurality groups of UEs or a processing unit of a designated UP entity; and the reporting policy comprises at least one of: designated event trigger reporting, time period trigger reporting or periodic reporting triggered by a designated event; and sending (102, 302), by the CP entity, a request for the synchronisation operation to a user plane, UP, entity, wherein the request carries configuration information about the content to be counted, the object and the reporting policy for the synchronisation operation; wherein the configuration information about the content to be counted comprises: first configuration parameter information for analyzing and counting a working status of a user traffic data stream, and second configuration parameter information for analyzing and counting a working status and a resource status of a processing unit of the UP entity; wherein the first configuration parameter information comprises: uplink and downlink transmission rate information about a traffic data stream, uplink and downlink Quality of Service information about the traffic data stream, packet data convergence protocol, PDCP, serial number information about a downlink traffic data stream, security operation information about an uplink traffic data stream or PDCP data packet recovery information about the uplink traffic data stream; and the second configuration parameter information comprises: a baseband resource duty ratio of the processing unit, a baseband resource busy-idle ratio of the processing unit, fault information about the processing unit, a number of in-serving data radio bearers, DRBs, of the processing unit or a number of protocol data unit, PDU, sessions of the processing unit.