Currently credit asssets is 50 billion RMB yuan.China began to practice pilot credit asset securitization in 2005 but the experiment temporarily stopped after America subprime mortgage crisis emergence.The re-initiation of the securitization can be regarded as a innovation for loan platform,however,the securitization process itself faces many problems,among which the management of default risk is most important.This paper mainly describes the central problems faced by current securitization process,emphatically points out structural method for forecasting dafault rate and finally advances several suggestions for helping the ssecuritization reform.