It is of great significance to comprehensively understand the structure of the water resource system and the relationships among the elements of the system. It contributes to a more resilient water resource system and ensures the system ' s well-functioning when facing adverse natural environmental impacts such as climate change. From a system synergized perspective, this paper established the eigenvector using measurable characteristic indicators,and depicted the order parameter variations of the water resource system. This paper also proposed the calculation model of the time series synergy for the order parameters based on the correlation calculation method of the space vector. All the order parameters were processed positively to explain the positive correlation between synergy degree and sustainability, and a higher synergy degree among all the order parameters or subsystems indicated a more sustainable water resource system. Based on the efforts, this paper established the synergized network of the water resource system using social network analysis method and considering the synergy degree between order parameters as the weight coefficient. The dynamic evolution of the water resources system from the perspective of social network structure was also investigated. Using the above analytical framework, this paper empirically investigated water resource system in Beijing from 2009 to 2016. The results showed that: ①The synergy effect between natural water resource system and other subsystems was significant in Beijing, and the natural water resource system dominated in the synergy of the integrated network.② The network-wide synergy of Beijing water resource system performed the best in 2011 -2012, and both the direct and the indirect links of the order parameters were tight. Particularly, the water infrastructure subsystem played a significant role in the network-wide synergy, indicating the contribution of water infrastructure construction and operation to the synergized development of the water resource system.③Opposite to the effect of water infrastructure construction and operation,the contribution of the investment into water infrastructure to network-wide synergy was relatively low. It is necessary to enhance the efficiency of water infrastructure investment.④The subsystems of production and living supply, as well as practitioner also played important roles in promoting network-wide synergy of water resource system, and could be artificially managed. So it is feasible and necessary to optimize these subsystems by adjusting their order parameters to a better position.