Security is the foundation and guarantee of urban development, and a correct understanding of the connotation and status quo is the premise of urban security work. In this paper we will discuss what concerns the security of city, including connotation, the status quo and future priorities that’s why we have to embed the theory of Humanism in psychology into the analysis of urban security, it will be useful to help construct a hierarchical model of urban security. The hierarchical model of urban security shows the content of urban security needs to break through the outdated and solidified cognition, including not only the Survival Security of protecting people's life and property in the traditional sense, but also Belonging Security and Growth Security. In the process of smart cities, Survival Security is strengthened, while Belonging Security is violated, and the city is in a state of transition from danger to safety and then into danger. Therefore, the focus of future urban security work is mainly in two aspects. On the one hand, it is necessary to break through the dilemma caused by technical governance and ensure the Belonging Security; on the other hand, it provides the convenience for Growth Security and promotes the transformation of the public from passive recipients of safety to active providers.
 

urban security, survival security, belonging security, growth security, humanism.