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��[Purpose/significance] As an emerging information technology, augmented reality technology has great space of research and development. The international research on user information behavior in the context of augmented reality is of great theoretical and practical value in promoting the development of China's augmented reality industry and guiding the research on graphics and information.[Method/process] Based on the methods of bibliometrics and knowledge mapping, this paper conducts analysis on the origin and development and knowledge mapping analysis on research hotspots, and provides insight and analysis on the future trend of this field.[Result/conclusion] The research status on users' information behavior in the augmented reality environment is still of rapid development. And the involved information behaviors research hotspots include information adoption behavior, information acceptance behavior and information interaction behavior. The future research direction from information science & library can be analyzed from three fields:the user interactive experience based on different scenes, the application of augmented reality in library construction, and the innovation way of reading books by augmented reality.     

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��[Purpose/significance] The accumulation and inheritance of knowledge promotes the development of human society. This paper proposes to study the inheritance and variation of knowledge by using the knowledge gene of scientific and technological literature, in order to have a more intuitive and comprehensive perspective on the inheritance and development of knowledge.[Method/process] By analyzing the narrow and broad definitions of knowledge genes, the research significance of knowledge genes was determined and their specific research objects were discussed. Two ways of expression of knowledge genes in scientific and technological literature were proposed, and the types of knowledge genes in scientific and technological literature were analyzed. The main factors affecting the inheritance and variation of knowledge genes were summarized, and the inheritance of knowledge genes was designed. And the method of variation.[Result/conclusion] The identification of knowledge genes in scientific and technological literature can effectively reveal the knowledge inheritance and iteration between different documents, and promote the development and perfection of the theoretical system of knowledge memes.     

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��[Purpose/significance] This paper collects and analyzes relevant literatures on user information behavior in virtual reality environment abroad, in order to understand the progress and future research trends of virtual reality in the field of library and information science, and provide reference and inspiration for future academic and industrial research.[Method/process] Using literature analysis and knowledge mapping visualization method, the origin and development of user information behavior in virtual reality environment abroad, foreign research hotspots and future research trends were analyzed and visualized.[Result/conclusion] From the perspective of researching hotspots, foreign research mainly focused on the research of user information acceptance behavior, user adoption behavior and human-computer interaction behavior under virtual reality environment. From the researching trend, future research will more concentrate on user social behavior, user adoption behavior and user reading behavior in virtual reality environment.