The city and urbanism are directly related to the production of publicities and public space. Public space has been one of the most important parts of cities as areas where social change takes place through social communication and interaction throughout history. These areas, like cities, have never shown a static feature; they have constantly changed and transformed by being affected by the social, economic and political conditions of the age. An important pillar of the spatial change and transformation process specific to the city is the creation of land use decisions for public and private spaces through urban administration and planning. It's essential to be prepared and cautious for any kind of disaster in the land-use decisions. Even though earthquakes are the first thing that comes to mind when natural disasters are considered, the pandemic process caused by The New Type of Coronavirus (2019 nCoV) presents the risks that can be caused by an infectious disease outbreak. Reorganizing public spaces as secure spaces by forming spatial thresholds became an obligation to protect public health and to decrease the risks as much as possible when providing urban security. At this stage, the problem of considering public space usage with regards to design principles from the legal and administrative aspects has emerged. The transformation process of the density concept and spatial thresholds affect the land-use decisions within public space and design principles. In this study, the effect of the pandemic process on urban administration and planning is discussed through public health, public space and spatial threshold concepts.