With population growth, resource scarcity, and geopolitical conflicts, the coordinated development of the water–energy–food nexus (WEF Nexus) poses a global challenge for achieving sustainable development goals. In this study, a dual-dimensional evaluation index system for the WEF Nexus was constructed, focusing on system development and inter-system coordination. On this basis, a WEF Nexus coordinated development index (WEFCDI) evaluation model and an obstacle factor identification method were proposed. The methods were applied to data colle...