Abstract: 【Purpose/significance】Because of weakness existed in studying knowledge structure and knowledge exchanging between subjects by references belonging to different disciplines,based on the theories of popper and ZHAO Hong-zhou,this paper constructs the theoretical basis of subject knowledge structure and knowledge crossover, and proposes to use the coupling relationship between authors to explore the potential knowledge connection between subjects,so as to make up for the shortcomings of the existing methods.【Method/process】The disciplinary knowledge structure measurement model and realization path are constructed,and the confirmatory analysis shows that the proposed method can significantly improve the weakness of the existing methods.【Result/conclusion】The pro‐posed method can not only supplement the potential knowledge exchange information between disciplines,but also reflect the knowl‐
edge connection between disciplines more precisely. It is pointed out that the combination of the method in this paper and the existing analysis method based on reference is the direction of further research.【Innovation/limitation】The method presented in this paper can reveal to a large extent the potential knowledge connections between disciplines that can't be revealed simply by using the subject attributes of references,thus helping to construct a more complete knowledge cross situation between disciplines. The shortcomings of this paper are that the case analysis is relatively rough,the details are still to be improved,and the visualization of data analysis results is still to be strengthened.