With the development of economy and the acceleration of urbanization, more and more young people are moving into cities, and the rental housing market is developing rapidly. The long-stay apartment building industry is now booming in China. Its public space is very valuable for residents to share living service facilities and develop social interaction. However, there are many problems in the space configuration and design of the public space. Therefore, this paper hopes to study the public space of China's long-stay apartment buildings for the youth and find ways to configure functions and design space. First of all, the author summarizes the driving factors, development and current situation of long-stay apartment buildings in China through data query and analysis.