[Purpose/significance] In response to the strategic demand for building autonomous disciplinary knowl⁃edge systems, this study aims to systematically review the research status and evolutionary trajectory of digital library user experience (UX). The goal is to construct a knowledge system for this specific field, thereby providing a micro-lev⁃el foundation and a practical case for the development of the parent discipline's autonomous knowledge system. [Meth⁃od/process] Following the PRISMA guidelines, a systematic literature review was conducted. A total of 81 documents were selected as the analytical sample from three major Chinese databases. The included literature was systematically coded for research themes, fundamental concepts, research paradigms, theoretical models, and evaluation frameworks.[Result/conclusion] This study identifies a three-stage developmental trajectory in digital library UX research and proposes a three-dimensional analytical framework for its research paradigms. Furthermore, it constructs a comprehen⁃sive knowledge system for digital library UX, centered on the core path of "value-driven - status analysis - practical approach". This work offers a novel pathway for the construction of disciplinary knowledge systems.