A method performed by a base station to processa standard version mode of the base station, comprising: the base station working in a first standard version mode, judging (S 102) whether a working mode of the base station needs to be adjusted, wherein the first standard version mode is a mode of providing services for a first standard version terminal at least supporting a first standard version; if a judging result is that the working mode of the base station needs to be adjusted, adjusting (S 104) the first standard version mode to another standard version mode, wherein said another standard version mode is a mode of providing services for other standard version terminals at least supporting another standard version other than the first standard version, wherein said another standard version mode comprises at least one of: a second standard version mode, which is a mode of providing services for a second standard version terminal at least supporting a second standard version; and a third standard version mode, which is a mode of providing services for the first standard version terminal and the second standard version terminal, characterized in that before adjusting the first standard version mode to the second standard version mode or the third standard version mode, notifying the first standard version mode terminals by sending adjusting information indicating that the base station is about to work in the second standard version mode or in the third standard version mode; after sending adjustment information, judging whether the base station has adjusted the working mode of the base station to the another standard version mode and sending working information that the base station works in the second standard version mode or the third standard version mode. the base station working in a first standard version mode, judging (S 102) whether a working mode of the base station needs to be adjusted, wherein the first standard version mode is a mode of providing services for a first standard version terminal at least supporting a first standard version; if a judging result is that the working mode of the base station needs to be adjusted, adjusting (S 104) the first standard version mode to another standard version mode, wherein said another standard version mode is a mode of providing services for other standard version terminals at least supporting another standard version other than the first standard version, wherein said another standard version mode comprises at least one of: a second standard version mode, which is a mode of providing services for a second standard version terminal at least supporting a second standard version; and a third standard version mode, which is a mode of providing services for the first standard version terminal and the second standard version terminal, a second standard version mode, which is a mode of providing services for a second standard version terminal at least supporting a second standard version; and a third standard version mode, which is a mode of providing services for the first standard version terminal and the second standard version terminal, characterized in that before adjusting the first standard version mode to the second standard version mode or the third standard version mode, notifying the first standard version mode terminals by sending adjusting information indicating that the base station is about to work in the second standard version mode or in the third standard version mode; after sending adjustment information, judging whether the base station has adjusted the working mode of the base station to the another standard version mode and sending working information that the base station works in the second standard version mode or the third standard version mode.