Urban livability is an important factor affecting the sustainable development of modern cities. Safe livability is an important part of urban livability. In view of this, this paper takes security as an example, and based on the actual data of Futian District, Shenzhen City, China, establishes a multi-agent simulation model of urban safe livability. The dynamic interaction feedback mechanism between decision-making behaviors of residents and urban safe livability under the influence of environment and policies has been explored, and residents' decision-making simulation of the change of urban safe livability is realized. Finally, the main factors influencing urban safe livability are summarized through simulation conclusions. The research can not only provide scientific suggestions for improving the safe livability of Shenzhen, it also provides strong support for the sustainable development of the city.Sustainability 2020, 12, 2070 2 of 15 detector model. Liu and co-workers explored the complex interdependence between emerging tourism and the livability of Chinese cities. Based on the conceptual model and statistical analysis of 35 large-and medium-sized cities in China from 2003 to 2012, the potential threat of overdevelopment of tourism to the livability of the city was deduced [4]. Paul and colleagues took Kolkata, India as the research object, and based their study on integrated urban geographic factors (IUGFs), evaluating the changes to livability in the city center to understand the impact of changes in livability on urban development [5]. Khorasani and Zarghamfard [6] analyzed the influence of spatial factors at local and regional scales on livability, using the urban village of Walamin as an example. The results showed that there was a significant relationship between village spatial factors and livability indicators. Furlan and Petruccioli [7] proposed a model called transit oriented development (TOD). This model improves urban livability through better integration of urban transportation and land use strategies, thereby maintaining sustainable urbanization. Most of the studies in the above literature only consider the meaning and measurement indicators of a more comprehensive livable city. They are limited to the concept and interpretation of the concept. They do not consider changes in the livability of the city under the influence of various factors. They only focus on static spatial equilibrium and the estimation of urban livability under quantitative indicators. Moreover, they ignore complex human factors and individual decision-making behaviors, and it is difficult to reflect the complexity of urban spatial systems. Therefore, in our study, computer technology is used to study the interaction between many environmental factors and complex human factors. Moreover, computer technology is of great significance to the study of urban safe livability.Multi-agent modeling [8] refers to abstracting the basic elements of complex systems into agents. Then, an agent simulation model corresponding to the real...