The present invention relates to the communications field and discloses a downlink offloading and converging method, an uplink offloading and converging method, and a device, to resolve a problem that low service quality and poor user experience are caused because UE service continuity cannot be ensured after some or all services of UE are offloaded. A specific solution is as follows: A cellular radio access device determines to offload data, in a cellular network, of UE served by the cellular radio access device to a non-cellular network; and the cellular radio access device sends, by using a non-cellular radio access device, a data frame to the UE served by the cellular radio access device, where the data frame includes a data packet that the cellular radio access device needs to send to the UE, and indication information used to indicate that the data packet is a cellular network data packet, and the indication information is used by the UE to process the data packet by using a cellular network protocol according to the indication information. The present invention is applied in an offloading and converging process.
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