现有健康信息质量评估多从专业研究人员视角开展质量评价，普通用户视角下的信息质量感知尚鲜有研究，文章拟对短视频平台中的用户健康信息质量感知行为发展脉络及影响因素展开探索。采用关键事件技术与焦点小组访谈两种方法收集了26位典型用户的健康信息质量感知主观数据并进行开放编码。最终在39起关键事件中梳理出了健康信息质量感知的13个关键节点和3个主要阶段，从剩余访谈数据中提取出了4个维度共计19项影响因素。在此基础上引入活动理论思想，构建了短视频平台中健康信息质量感知综合模型，展示了用户健康信息质量感知行为从产生、演进到结果变化的完整过程，厘清了参与质量感知活动的基本要素和要素间的交互细节，揭示了可能改变质量感知进展与结果的影响因素。

Most of the existing health information quality studies have conducted professional quality evaluation from the perspective of professional researchers, but there are few studies has been conducted on the information quality perceptions from the perspective of ordinary users. This paper aims to explore the development of user's health information quality perception behavior and the factors influencing it in the short video platform. This paper collected subjective data on health information quality perceptions from 26 typical users by Critical Incident Technique and Focus Group Interviews, and conducted open coding on these data. The researchers sorted out 13 key nodes and 3 main stages of health information quality perception from 39 critical incident, and extracted 19 influencing factors in 4 dimensions from the remaining interview data. On this basis, an integrated model of health information quality perception in short video platforms was constructed. The model comprehensively demonstrated the complete process of users' health information quality perception, clarified the basic elements involved in quality perception activities and the details of interactions between elements, and revealed the influencing factors of quality perception.