A method, performed by a source wireless access network element, for enabling partial transfer of service bearers of terminal, the method comprising: the source wireless access network element receiving service equalization indication information transmitted by a core network; and the source wireless access network element transferring, according to the service equalization indication information, parts of or all of service bearers of a terminal in a source network to a destination network, wherein the service bearers are user plane connection bearers established for transmitting terminal data; the method being characterised in that : the service equalization indication information comprises identification information of a terminal which needs a service equalization operation and, when the service equalization indication information comprises the identification information of the terminal, the source wireless access network element transferring, according to the service equalization indication information, parts of or all of the service bearers of the terminal in the source network to the destination network comprises: the source wireless access network element determining a terminal corresponding to the terminal identification information and determining, in services of the determined terminal, at least one service bearer to be transferred at the time of service equalisation; and the source wireless access network element transferring the at least one determined service bearer to the destination network. the source wireless access network element receiving service equalization indication information transmitted by a core network; and the source wireless access network element transferring, according to the service equalization indication information, parts of or all of service bearers of a terminal in a source network to a destination network, wherein the service bearers are user plane connection bearers established for transmitting terminal data; the method being characterised in that : the service equalization indication information comprises identification information of a terminal which needs a service equalization operation and, when the service equalization indication information comprises the identification information of the terminal, the source wireless access network element transferring, according to the service equalization indication information, parts of or all of the service bearers of the terminal in the source network to the destination network comprises: the source wireless access network element determining a terminal corresponding to the terminal identification information and determining, in services of the determined terminal, at least one service bearer to be transferred at the time of service equalisation; and the source wireless access network element transferring the at least one determined service bearer to the destination network. the service equalization indication information comprises identification information of a terminal which needs a service equalization operation and, when the service equalization indication information comprises the identification information of the terminal, the source wireless access network element transferring, according to the service equalization indication information, parts of or all of the service bearers of the terminal in the source network to the destination network comprises: the source wireless access network element determining a terminal corresponding to the terminal identification information and determining, in services of the determined terminal, at least one service bearer to be transferred at the time of service equalisation; and the source wireless access network element transferring the at least one determined service bearer to the destination network. <EOS>