1 year -2 years. According to the product information of public rental housing, the fresh graduates of full-time colleges and universities will be given a lease transition period of 1 year within three years, and the fresh graduates of full-time "double-first-class" construction colleges and universities will be given a lease transition period of two years within five years. After the transition period, those who meet the occupancy conditions of public rental housing will be included in the management of public rental housing. Those who fail to meet the access conditions of public rental housing after examination will not be forced to quit. They can choose to go through the exit formalities according to the wishes of college students or re-sign the rental contract according to the market rent, and they can only live for 1 -2 years. Public rental housing refers to the affordable housing provided by the state with policy support, limited construction standards and rent levels, and rented for families with housing difficulties with lower-middle income in cities and towns, newly employed workers without housing and migrant workers with stable employment in cities and towns.