Theoretical Viewpoints of the U.S. Subprime Mortgage Crisis

The US subprime mortgage crisis which burst out in 2007,evolved rapidly upgrades,overspread to the entity economy and had a sharp shock on the world economy in a short time;it also had a bad influence on economic. This paper sorts and classifies comprehensively all the main research doctrine on causes of the subprime crisis for more than two years,and makes a pointed comment on these,in order to offer beneficial reference for formulating the policy,the economic crisis coping and the steady development of the economy.