Through a long and tortuous development process，government has established a relatively complete urban housing security system at the national level and Sichuan，which includes low-cost housing，affordable housing，public rental housing supply system and provident fund，low rent housing rent subsidies consumption system. This system is gradually expanding insurance coverage，and earnestly solves the basic living security object difficult at the same time，also presents high management costs and efficiency of resource allocation problems. Because of this，the present system starts a new transformation and change. It will gradually streamline into “one rent one sale”，and the migrant workers absorption security system. In this regard，Sichuan needs to firm up the short-term and the long-term goal task in the transformation，draft policy implications and strategies in order to improve the development of Sichuan urban housing security system.