Provided are a cross-Master eNB (MeNB) switching method and apparatus, and a base station. The method comprises: a target MeNB determines that a UE has already established a selected internet protocol traffic offload (SIPTO)/local internet protocol access (LIPA) service on a secondary eNB (SeNB) before the switching; and the target MeNB retains or releases the SIPTO/LIPA service, wherein the user equipment (UE) is accessed to a source MeNB and the SeNB through dual links before the switching, and the UE is accessed to the target MeNB and the SeNB through the dual links after the switching, and a combined local gateway (L-GW) supporting the SIPTO/LIPA service is configured on the SeNB. By means of the present invention, the problem in the related art of not considering the processing of the SIPTO/LIPA service in the cross MeNB switching process is solved, thereby providing an SIPTO/LIPA service processing method in the cross MeNB switching process.