[Purpose/significance] Interdisciplinary research has become an important paradigm and inevitable trend of modern scientific innovation research. Exploring the development pattern and path of interdisciplinary fields is of great significance for understanding the dynamic process of interdisciplinarity formation and development.[Method/process] Taking the field of Eye Tracking (ET) as an example, the citation relationship of the literature was extracted and the subject was marked, and the citation networks of the literature and the subject level were constructed. To perform an analysis on the interdisciplinary development pattern of major disciplines in the ET field from a macro level, the cross-same field reference ratio, cross-same field citation ratio and Price's Index were calculated. Then this study examined the relationship between disciplines within and between different stages, and explored the relationship structure and role evolution of interdisciplinary development in different stages. Finally, to reveal the specific development path of ET development from the micro level, betweenness centrality analysis was performed to identify important documents that connect different disciplines. Moreover, this study examined the citation relations between important documents, highly cited documents, and references.[Result/conclusion] The development of ET field has three stages:incubation period, development period and maturity stage, and presents three types of subject development pattern:independent, interdisciplinary and learning discipline. The citation relationships between different disciplines are more dense and evenly distributed over time. Neuroscience, psychology and clinical medicine are important knowledge exporter during the interdisciplinary evolution. The vertical development of ET field is the basic theoretical innovation of independent disciplines, and the horizontal development is characterized by the deep integration of four types of disciplines, and the development path is presented as "independent-linear-mesh" pattern.
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