Abstract: There are lots of complicated causes leading to American secondary mortgage loan crisis, which is caused by deep social and cultural roots and the currency policy factors as well as irregular operation from finance institution. The crisis suggests that we should consume rationally, and enhance the release of information and supervision of the market. Moreover, it indicates that to cut down income tax from the individuals and the company and improve the consumption capacity are the measures to healthily invigorate and develop economy.

Key words: Americansecondarymortgageloancrisis, thedevelopmentofChineseeconomy