Based on the introduction of complex social network theory and methods, this study reveals enterprises' patent layouts to help Chinese enterprises distinguish from the core competitors. This study uses the social network analysis method and the system cluster analysis method to systematically analyze the macro technology development trend and its competitors' micro technology innovation points. Based on the structure of enterprise resource investment, a two-dimensional matrix with the keyword "similarity-technological competition intensity" was constructed to accurately identify BYD's core technological competitors. In China, BYD Company should regard GX Company and ND Company as core technology competitors, pay attention to the technology development direction and patent layout of YW Company and HD Company, and pay attention to the patent dynamics of GLM Company and YQ company in specific technological innovation points.
