Abstract:In order to further study the safety problems in the operation of business aviation, find out the security risks existing in the business airlines ,so as to prevent and control the security risks,the entropy weight (EW)method and the relevant theories of set pair analysis(SPA) were combined to build a SPA model to evaluate the risk level of the operation control of a business airline.Firstly,,determine the safety risk index system of business aviation operation control, the EW method was used to reduce the interference of the subjective factors in determining weights of indicators of safety risk, under the consideration of all the uncertainty, a modified SPA model was constructed. And under the combining with the characteristics of business aviation operating safety risks , a set relationship between risk indicators and risk levels was established.Based on the operation of the business airline from 2014 to 2018 , a comprehensive assessment was conducted.The results show that the risk level of this business airline was level II in 2014-2015, level III in 2016-2017, and level II in 2018, which defined the risk trend and provided the basis for further security risk management and control.