In the course of smart city security construction,China encounters numerous security risks and challenges,and the construction of smart city security remains in a relatively vulnerable position.To enhance the capacity of smart cities in coping with security risks and guarantee the stable operation of smart cities.Based on the questionnaire and literature review,this paper constructs an index system of influencing factors for smart city safety construction,consisting of 3 first-level indicators and 15 second-level indicators.The ISM model is employed to determine the action path and hierarchical structure among the influencing factors,and to evaluate and analyze the influencing factors of smart city safety construction.Finally,based on the analysis of the ISM model,the author puts forward countermeasures and suggestions.The results demonstrate that data sharing and organic integration are the most profoundly influential factors;The middle-layer factors,such as innovation power and technology upgrading,have an impact on both the surface factor and the deep factor.Security awareness,information protection and other surface factors have the most direct influence on its security construction.It can provide a reference for the safety construction of smart cities.