The invention discloses a system upgrading method and device, an apparatus and a storage medium, and the method comprises the steps of creating a first webpage browser in a to-be-upgraded system, wherein the first webpage browser is used for operating in a front-end framework of a new version, and meanwhile, packaging a target interface in the to-be-upgraded system, so that the first web browser can call the resources of a client in the to-be-upgraded system through the packaged target interface. After the system is upgraded based on the above mode, the upgraded system can be compatible with the front-end framework of the new version through the first webpage browser; moreover, in the whole system upgrading process, a new webpage browser is created in the to-be-upgraded system and interface packaging is completed instead of re-developing the to-be-upgraded system of an old version, so that the system upgrading difficulty can be reduced, the system upgrading period can be shortened, and the system upgrading cost can be reduced.