A code change method, wherein the method comprises: obtaining software code and change configuration information that are input by a user, wherein the change configuration information comprises a to-be-changed code element in the software code, a change manner of the to-be-changed code element, and a changed code element corresponding to the to-be-changed code element; determining a plurality of changers and a calling sequence of the plurality of changers based on the change configuration information; and sequentially calling the plurality of changers based on the calling sequence of the plurality of changers to change the software code, wherein each changer comprises a software apparatus, the software apparatus comprising an input and an output; and each changer is configured to change a to-be-changed code element in the software code, an input of the first called changer of the plurality of changers is the software code, an output of the first called changer is changed software code, and the changed software code of the first called changer is input into another changer of the plurality of changers, wherein the method is characterised in that the determining a calling sequence of the plurality of changers based on the change configuration information of the software code further comprises: if there are conflicting changers in the plurality of changers, determining that a change mode of the software code is a serial change mode or a partial serial or partial parallel change mode; and if there are no conflicting changers in the plurality of changers, determining that a change mode of the software code is a parallel change mode. obtaining software code and change configuration information that are input by a user, wherein the change configuration information comprises a to-be-changed code element in the software code, a change manner of the to-be-changed code element, and a changed code element corresponding to the to-be-changed code element; determining a plurality of changers and a calling sequence of the plurality of changers based on the change configuration information; and sequentially calling the plurality of changers based on the calling sequence of the plurality of changers to change the software code, wherein each changer comprises a software apparatus, the software apparatus comprising an input and an output; and each changer is configured to change a to-be-changed code element in the software code, an input of the first called changer of the plurality of changers is the software code, an output of the first called changer is changed software code, and the changed software code of the first called changer is input into another changer of the plurality of changers, wherein the method is characterised in that the determining a calling sequence of the plurality of changers based on the change configuration information of the software code further comprises: if there are conflicting changers in the plurality of changers, determining that a change mode of the software code is a serial change mode or a partial serial or partial parallel change mode; and if there are no conflicting changers in the plurality of changers, determining that a change mode of the software code is a parallel change mode. if there are conflicting changers in the plurality of changers, determining that a change mode of the software code is a serial change mode or a partial serial or partial parallel change mode; and if there are no conflicting changers in the plurality of changers, determining that a change mode of the software code is a parallel change mode. <EOS>