The invention discloses a method, equipment and system for processing user plane in switching process. The method comprises the following steps: if a plurality of object base stations are selected foruser equipment by a source base station, data forward shifted is stored in a cache after data is forward shifted to the object base stations by the source base station, and the data forward shifted and stored in the cache is eliminated after any one of the release source information in the object base stations are received by the source base station. The invention can ensure the lossless transmission of user plane data in the case of wireless link failure in the switching process under the plurality of multi-prepared object base stations.