The Central Economic Work Conference held at the end of 2023 emphasized"actively and steadily resolving real estate risks".As the most serious economic crisis in the 21st century,the measures introduced by the government after the U.S.subprime mortgage crisis have provided rich and valuable experiences for China in dealing with real estate problems currently.Besides a brief introduction to the causes,process and economic consequences of the subprime mortgage crisis,we forces on the key measures taken by the United States government,including Troubled Asset Relief Program,Financial Assistance Program,unconventional monetary policies,conservatorship,and financial regulatory reform.We hope to gain experiences and lessons from this case study,serve the policy maker to better solve the current problems in China's real estate.