In the digital era, the education and teaching of private undergraduate universities in China are undergoing innovative reform. This article uses the literature review method to conduct a survey and research on the quality of teaching resources, teaching platforms, and literature reserves, and proposes a series of strategies and innovative paths to improve the teaching quality of private undergraduate universities. The research results show that the rational use of digital technology can improve the quality of education and teaching, and achieve innovative development in education and teaching. The research results have certain theoretical value and guiding significance for the teaching reform of private undergraduate universities under the background of digital teaching.