In recent 30 years，the the industry of American Investment bank was the poineer of the global financial innovation ，as a result of the series of financial innovation ，the ecomomic of America developed steadily and Therefore，the routine of the development of American finance and the innovation model of investment bank were learned by many countries inlcude CTher're also the reference ofthe pulling of the financial development of many However，When the 2008 financial crisis taking place in America then stretched to the whole world like a storm，when Wall Street's five largest investment banks collapsed ，the Mythology of Wall Street investment bank was completely Despite there were divergent views about the root causes of the crisis， we still can't ignore the inquiry and reflection of financial So we need to reflect on the overdone financial innovation in US investment bank carefully， thus for drawing lessons， while avoiding disadvantages to It has an important reference for our future path of financial innovation Keywords:Investment banking，financial innovation，lessons，Revelation除了个别生词用了谷歌翻译，全文是动脑子敲出来的，主要是秀一下咱的英语——说好那是太过了，但应付四六级还是很富裕，摘要有些话写的绕了，我翻译时通过从句进行了修改。应该没问题……
