Abstract: By selecting Haier Group as the main case, Huawei Technologies co., LTD and TCL as the auxiliary cases, this research analyzes the co-evolution of international interface, resource system and technology innovation strategy during the three stages of internationalization. The results are as follows. Firstly, sequential evolutions and regulations of international interface, resource system and technology innovation strategy are concluded, including international interface evolving from “internal lead-in connections” to “global allocation connections”, resource system evolving from “associated industries resources” to “industry reputation resources” and technology innovation strategy evolving from “technology localization”, “external learning” to “global R&D”, “strategic learning”. Secondly, the static adaptation and dynamic co-evolution of these three aspects are analyzed, and the co-evolution model has been proposed.