Abstract: 【Purpose/significance】From the perspective of user experience, it reveals the utility of accessing mental health science
popularization short video information of college students and its influencing factors, which is conducive to understanding their mental
health status and providing support for related knowledge expansion and quality improvement, and helps short video platforms provide better mental health information services.【Method/process】Eighteen college students who had recently watched short mental health science popularization short videos on Bilibili were selected as research subjects, and the semi-structured interview method was used to conduct in-depth interviews, combined with the key event method to obtain interview data, applied the three-stage coding strategy of grounded theory to reveal the information utility and its influencing factors obtained by college students from mental health science popularization short videos on Bilibili, and constructed a corresponding theoretical model framework.【Result/conclusion】The infor? mation utility obtained from science popularization short videos on mental health is multi-layered, including cultural benefits, problem solving and cognitive value. From the perspective of user experience, the main influencing factors of information utility include percep? tual experience, functional experience, emotional experience and user background, which play a leading, key, regulating and driving role respectively, among which emotional experience is influenced by the feedback of information utility.【Innovation/limitation】It is necessary to expand the research sample group to improve the external validity of the research conclusions. Furthermore, some empiri? cal methods are needed to verify the theoretical model and compute the impact strength of each path in the model.