By using polychoric principal component analysis, a quantitative research of digital intelligence transformation of A-share manufacturing listed companies in China from 2009 to 2020 is studied. The empirical study is also carried out for the influencial factors of the transformation. Conclusions are as follows: the level of transformation is increasing, but it is not the same among different type of firms. Technology, employee’s human capital and firm size have positive effects on the firm’s digital intelligence transformation. However, competition and government support have no effects. As for eastern firms, foreign-funded firms and technology-intensive firms, the level of technology and firm size have much more effect than others.