Abstract: Based on patent application data of China's new energy vehicle industry from 2000 to 2017, the patent cooperation network of this industry was constructed, the evolution path of its topological structure and spatial structure in different periods was investigated, and the key innovation subjects and innovation agglomeration degree of this industry were further analyzed. The research results show that:the scale of new energy vehicle patent cooperation network in China has been expanding continuously from 2000 to 2017, but the overall network structure is still relatively sparse, the depth of cooperation between nodes has increased significantly, but the scope of cooperation has changed slightly; from the perspective of key nodes, most of them were colleges and universities before 2012 and since 2013 they are power-related companies and research institutes, and it can be identified that the State Grid Corporation of China is the most important key node in the network; besides, the cross-regional cooperation among the main bodies of new energy vehicle patent innovation network has formed six main axes, but the overall cooperation intensity shows a decreasing trend from east to west, and the spatial agglomeration degree of cross-regional patent cooperation activities is low, which needs to be further enhanced.