Since the resumption of asset securitization business in 2012，the securitization of credit assets has been developing very rapidly. As of 2016，the total issue size has been reached 12228 billion yuan. In 2016，the people’s Bank of China carried out the MPA examination on commercial banks，called “macro prudential evaluation system”. It is possible for banks to choose the structural financing instruments such as asset securitization to liquidate their non-performing assets to meet the requirements of MPA assessment Credit asset securitization is likely to usher in a development peak.

Under this background，this paper takes the impact of credit asset securitization on the financial performance of commercial banks as the research objective，This paper quantifies the impact of this financial performance from an empirical perspective，It has important realistic meaning and innovation meaning. What impact does the securitization of credit assets have on the financial performance of commercial banking institutions？Previous theoretical analysis basically believes that credit asset securitization will improve the financial performance of commercial banks，but empirical studies are rare. Therefore，this article attempts to use the financial data of listed banks in China’s A share market before and after asset securitization，using factor analysis method to study this issue.

Commercial banks are divided into two types：large and medium-sized joint-stock commercial banks and urban and agricultural firms in this paper. We select 11 financial indicators according to security，liquidity，profitability and growth，which are the four important aspects of commercial banks. Capital adequacy ratio，liquidity ratio，asset yield earnings per share，growth rate，capital adequacy ratio and liquidity index（the most important assessment index in MPA system）are included in the selected indicators. The study was divided into short-term and long-term two study periods. The short-term research selects the quarterly data and the quarterly data before the issuance of the credit asset-backed securities，Long term research selects the quarterly data before the issuance of credit asset-backed securities and the quarterly data issued after one year. Factor analysis was used to compare the changes in financial performance. The empirical results show that credit asset securitization can significantly improve the financial performance of city and agricultural firms in the short and long term. However，the short-term effect of credit asset securitization on the financial performance of large and medium-sized commercial banks is not obvious. In the long run，it may even have a negative impact on the financial performance of large and medium-sized commercial banks.