【Purpose/significance】 Interdisciplinary research collaboration means both opportunities and challenges for young re⁃

searchers faced with new research environment and social development needs. Exploring its influencing factors and mechanism will help optimize collaboration decision-making and element layout.【Method/process】 This paper conducts semi-structured in-depth in⁃terviews with young researchers who have experience in interdisciplinary research collaboration, and qualitatively analyzes the inter⁃view data according to the grounded theory, and extracts fourteen sub-categories and six main categories, and develops a theoretical framework (ICE Framework) of the influencing factors from three dimensions: individual, collaboration network, and external environ⁃ment.【Result/conclusion】 Young researchers' interdisciplinary research collaboration behavior is influenced by internal drive, inter⁃nal maintenance and external promotion. Collaboration attitude and perceived control are the core internal driving factors; collaborator interaction, relationship quality, and shared cognition are the key internal sustaining forces; external support can be subdivided into policy support, special fund, and discipline institutional support.【

Innovation/limitation】 This study focuses on young researchers, and uses qualitative methods to explore and develop a three-dimensional framework of influencing factors of interdisciplinary research col⁃laboration behavior. In the future, it needs to be verified by large-scale data, and the difference of influence in different situations will be distinguished.