Abstract: 【Purpose/significance】This paper has significant enlightenment for understanding the theoretical mechanism of "search as
learning", the design of information systems that support users' learning needs, and the optimization of retrieval tools that combine
learning and social experience functions.【Method/process】Information Search Process (ISP) model is taken as the theoretical basis,
the diary study and Critical Incidents Technique (CIT) method are combined to discuss the basic rules of physical, affective and cogni?
tive changes in the process of information search users' learning, and based on this, an evolutionary model of information search users' learning process is constructed.【Result/conclusion】In the six stages of initiation, selection, exploration, formulation, collection and presentation, information search users have very rich performance in actions, feelings and thoughts. In the initiation stage, there are two types of events: clear goal and fuzzy goal. In the formulation stage, users will combine their understanding of the search results and the satisfaction of their learning needs to form two situations of "going ashore in advance" and "riding the waves". Social search, cross?device search and cross-system search have become common phenomenon in "search as learning" activities.【Innovation/limitation】 Reexamines the ISP model in the context of "search as learning", however, the analysis and explanation of the specific factors that af? fect users' emotion and cognition need to be further explored.