Water, energy and food are basic human needs. However, there is a competitive relationship among these three types of resources regarding land resources. How to study the coupling and coordination relationship among water-energy-food (W-E-F) from the perspective of land use has become a problem demanding prompt solution. In this study, parallel data envelopment analysis and coupling coordination degree (CCD) model were used to establish an efficiency coupling model of W-E-F. The model aims to explore the interrelationship among the three kinds of important resources as a whole and establish a synergistic collective solution. The results showed that the relationship among water, energy and food with a high CCD can improve the overall parallel efficiency. The results can provide a reference for the development of long-term coordination plan and action plan of departments to achieve Sustainable Development Goals.