Innovation is the continuous source of power for the survival and development of SMEs, but the complexity of innovation and the limitation of resources make SMEs trapped in the dilemma of “innovation difficulty”. A moderated mediating model was constructed based on social network theory and resource view, and fuzzy set qualitative comparative analysis (fsQCA) was used to empirically study the influence mechanism between network relationship characteristics and SMEs’ innovation and the configuration path to achieve SMEs’ high innovation performance. The results show that the characteristics of network relationships positively affect the innovation performance of SMEs. Supply chain dynamic capability plays an intermediary role between network relationships and SMEs’ innovation relationships. Different geographical proximity levels of the supply chain lead to different coordination interaction and knowledge sharing efficiency between upstream and downstream, which not only positively moderates the relationship between supply chain dynamic capability and SMEs’ innovation performance, but also moderates its mediating effect. Furthermore, the fs QCA analysis results show three configurations for SMEs’ high innovation performance based on the characteristics of network relations: geographic proximity regulating type, network relationship dominant type, and dynamic coordination and integration type.

In the context of sustainable development, green supply chain, as a whole-process environmental management model, provides a good implementation path for the development and utilization of prefabricated buildings. However, the green supply chain operation of prefabricated buildings in a complex social network environment involves many risk factors, which seriously affect the realization of the green supply chain management goals. This research first identifies risk factors based on the perspective of stakeholders, and then uses fsQCA to analyze the risk factors in the green supply chain of prefabricated buildings, and identifies four configurations that lead to high risks in the green supply chain of prefabricated buildings. Risk is the main risk that leads to the risk of the green supply chain of prefabricated buildings. The types of core risks involved mainly include externality risks, organizational management risks, and manufacturing risks. This research provides an effective method for evaluating and reducing risks in the green supply chain of prefabricated buildings, and improves the effectiveness and accuracy of risk control by all participants.