"Exploring the action mechanism and realization path of value co-creation of business ecosystem in the Digital era" is a research problem. Haier is the case study object. Dynamic capabilities, asset orchestration and resource collaboration are the research perspectives. Exploratory single case study is the research method, and analyzing the realization mechanism of value co-creation in business ecosystem is the research process. The results are as follows: Firstly, asset orchestration complements the resource perception process of resource orchestration, and dynamic capability complements the environment perception process of resource orchestration. The nested coupling of three perspectives jointly completes the dynamic creation process interpretation of environment-resource-capability-value of business ecosystem. Secondly, digital technology and data assets redefine resources and capabilities, and expand the scope of application of resource orchestration. Finally, the concept of "resource integration" is proposed by integrating the capability view and resource action view, combining the core enterprise organization system and digital technology application, and the value co-creation process model of business ecosystem in the digital era is constructed. Therefore, this study expands the applicable boundary of resource orchestration theory in the digital era, promotes the theoretical integration of dynamic capability and resource action, demonstrates the transformation route of resource-capability-value of commercial ecosystem, and provides guidance for resource management of commercial ecosystem.