With the development of Internet big data technology, more and more modern medium and large enterprises have started to introduce Internet technology into the internal management of enterprises, and project management is the most important application area that accompanies the growth and development of enterprises. This paper takes traditional enterprise project management as the theoretical basis, supported by big data Internet technology, through big data unstructured data classification process, using empirical analysis method to conduct an exploratory analysis of the constructed management capability index system, and finally constructs a function model based on the application of big data technology in enterprise project management. After analyzing the digital overview, the necessity of using digital in enterprise project management is clarified, and the exploration of using digital in enterprise project management is proposed. Through the design and development of resource management, operation queue, and scheduling strategy, the joint analysis of data level between multiple systems is constructed to create a good environment for enterprise project management. The development of big data Internet technology brings important and positive changes to enterprise project management, helps enterprises to keep up with the trend of the times, efficiently apply the advantages of digitalization, and promotes enterprise project management towards standardization and efficiency.