Emerging industries generally show the trend of technological convergence, and convergence innovation has become an important way to grasp the future development opportunities of industries, and enhancing the ability to respond to technological convergence is an issue that must be considered by enterprises for continuous innovation. To analyze the relationship between three characteristics of technological convergence and enterprise innovation performance, namely, betweenness, closeness and clustering. Using financial, properties and patent data of listed companies in China"s automotive manufacturing industry, an empirical study is conducted using a negative binomial regression model, and it is found that enhancing all three technology convergence characteristics is conducive to enhancing innovation performance. Meanwhile, corporate knowledge base plays a mediating role in which the effect of knowledge base width on clustering technology integration is more strongly mediated by the effect of knowledge base depth on approaching technology integration.