Abstract: 【Purpose/significance】The basic characteristics of network cohesiveness reciprocity, continuity and frequency can stimu?
late and strengthen the trust among cooperative organizations and further promote the exchange of complex technologies or knowledge in cooperative networks.【Method/process】Using the patent application data of Beijing-Tianjin-Hebei cross-regional joint applica? tion, we analyze the characteristics of technical cooperation network cohesiveness and its influencing factors, and explore the evolution? ary driving mechanism of technical cooperation network cohesiveness among Beijing-Tianjin-Hebei cross-regional subjects.【Result/conclusion】The results show that the cohesiveness of the Beijing-Tianjin-Hebei cross-regional inter-subject technical cooperationnetwork is low, and the inter-subject cooperation in the network has high sunk cost, opportunity cost and transformation cost; indus? trial proximity, social network stability and historical network foundation are important factors influencing the cohesiveness character?istics of the network; path dependence is the driving mechanism for the development of cohesive subgroups in the network; the gover? nance scheme of the Beijing-Tianjin-Hebei cross-regional inter-subject technical cooperation network can be developed around both network cohesiveness characteristics and factors influencing the formation of cohesive subgroups.【Innovation/limitation】This paper only proposes a network relationship governance model based on the core subjects in Beijing, Tianjin and Hebei, and the number range defined is small. In the future, we should further expand the scope of research subjects and try to propose a scheme applicable to network relationship governance in urban clusters.