Abstract: Open government data is a key measure to build modern governance capabilities and respond to big data development strategies. The formation of a collaborative network between policy entities is a driving force to eliminate the data gap and enhance the value of data. Using the social network analysis method, this paper explores the evolution characteristics of the collaborative network of government data open policy subjects.The study found that the scale of the network has continued to expand and its compactness has increased. The overall network has experienced structural evolution characteristics from “core-edge” to “core-semi-edge-edge”, and multi-center coordinated and balanced development; network individual “breadth-strength” increased, financial The status of core entities such as the Ministry of Economic Affairs and the National Development and Reform Commission tends to be stable; however, there are also problems such as poor network stability, low information transmission efficiency, and low matching of powers and responsibilities, and proposes to clarify the interests and responsibilities of synergistic entities and give full play to the coordination capabilities of core entities.