Abstract: 【Purpose/significance】This paper constructs a structural model of the influencing factors of the information ecological sys⁃ tem environment,analyzes the mechanism of the influencing factors,and provides theoretical guidance for clarifying the obstacles to the operation of the information system environment and clarifying the optimization direction of the information system environment.【Meth⁃ od/process】Firstly, it extracts the influencing factors of information system environment from the relevant literature at home and abroad, and then selects and supplements the influencing factors through expert survey method. Finally, it uses interpretative structur⁃ al model to sort out the hierarchical relationship among the influencing factors, and clarifies the hierarchy among the influencing fac⁃ tors.【Result/conclusion】The first level of direct influencing factors of the information ecological system environment includes the im⁃ portant aspects of information system construction,information system implementation and information man,and the second level of in⁃ fluencing factors is the comprehensive quality of the system formulation body and the system implementation body as well as the sys⁃ tem and culture of the organization.The third-level influencing factors are typical emergencies and unspoken rules.The application of information technology and the social environment in which the system is located are the fourth-level influencing factors.The lowest and most fundamental influencing factor is the will of the ruling class.【Innovation/limitation】The influencing factors and hierarchical relationships of the information ecological system environment are determined, but the analysis of the mechanism of influencing factors needs to be deepened.