证券化是一个复合概念。广义的证券化是以股票、债券等证券发行作为直接融资方式，取代以银行贷款为代表的银行间接融资方式；狭义的证券化是指把己经形成的非证券形态的资产存量转变为证券资产。它的典型做法如把银行己发放的贷款转变成可流通票据并转让出去，形成二级资产市 Securitization is a complex concept. Broadly defined securitization is based on the indirect financing of banks, which is represented by bank loans, through the issuance of equities and bonds as direct financing. The narrow securitization refers to the transformation of the existing stock of non-securities assets into securities assets . Its typical approach, such as the bank loans have been issued into negotiable instruments and transferred out to form a secondary asset market