Abstract: As a high-order iteration of information technology, digital technology has created a rare historic opportunity for the transformation and upgrading of the global manufacturing industry. In the digital economy era, digital technology is a key strategic resource of enterprises with innovative advantages. How to make digital technology play a better role in manufacturing enterprises and promote the digital innovation practice of enterprises is an urgent problem to be solved in the digital transformation and upgrading of manufacturing enterprises. Digital technology affordance is a key inducement for the heterogeneity of enterprise digital innovation. After deconstruction, digital technology affordance can be divided into cumulative affordance and variant affordance. Based on the perspective of coherent and flexible search, this paper discusses the mechanism of its influence on the realization of the value of enterprise digital innovation. In addition, the generativity function of digital infrastructure in the digital technology affordance serves as a connecting mechanism between the realization of digital innovation value and the digital technology affordance, it provides an explanation mechanism for exploring the process mechanism of enterprise sustainable digital innovation. Therefore, this paper constructs the theoretical model of the realization mechanism of enterprise digital innovation value, trying to answer the paradox that similar digital technology will produce different effects in different enterprises. This paper adopts the method of questionnaire survey to obtain sample data, focuses on the digital innovation practice of advanced manufacturing enterprises in Yangtze River Delta Economic Zone, and uses the sample data of 894 private high-tech enterprises for empirical test and analysis. The results show that the cumulative affordance of digital technology has a significant positive influence on the value intensity and the value scope of enterprise digital innovation. While the variant affordance of digital technology also has a significant positive influence on the value intensity and the value scope of enterprise digital innovation. The coherent search mechanism helps to strengthen the relationship between cumulative affordance and the value intensity of digital innovation, and the relationship between variant affordance and the value scope of digital innovation. While flexible search strengthens the relationship between variant affordance and the value scope of digital innovation. The findings of the study have made significant theoretical contributions to clarify the realization mechanism of digital technology affordance and digital innovation value of enterprises. At the same time, it also provides the following three practical inspirations for manufacturing enterprises to realize the value of digital innovation. First, enterprises need to be good at using digital technology to promote the transformation and upgrading of organization. In the practice of digital innovation, enterprises can use digital technology to upgrade or replace traditional production technology according to their own situation, and promote product innovation and upgrading, better respond customer demand and create enterprise value. Secondly, managers need to promote steady digital reform and innovation through duality search strategies. Finally, enterprises can further develop the generative characteristics of digital technology by building a digital resource database to better perceive the current innovation status of digital technology applied to products, so as to adjust the application strategy of digital technology in enterprises and promote the sustainable realization of the value of enterprise digital innovation.