Abstract: 【 Purpose/significance】In the era of digital economy, the importance of digital literacy has become increasingly prominent. Strengthening the cultivation of digital literacy of graduate students in colleges and universities is of great significance to improving the quality of China's higher education and promoting the rapid development of scientific research.【 Method/process】 This paper uses the grounded theory method to extract 55 initial concepts, 16 basic categories and 5 main categories by coding and analyzing the original data obtained from interviews. On this basis, it combs the internal logic between various categories, and constructs a theoretical model to form the influence mechanism of graduate students' digital literacy.【 Result/conclusion】 The research shows that the quality of digi⁃ tal platform, digital information, digital equipment, personal factors and environmental factors will have a positive impact on the digital literacy of graduate students. 【Innovation/limitation】 Based on the theoretical model, the cultivation strategy of digital literacy of graduate students is proposed, which provides theoretical support for colleges and universities to further improve the digital literacy education of graduate students, and has practical significance.