The scheme, which allows banks to refinance high quality credit assets rated by the central bank, was first introduced in Guangdong and Shandong provinces in 2014. The People's Bank of China relent 4.97 billion yuan ($755.74 million) to 31 institutions from the start of the program through to the end of 2015.

The central bank said it would expand the relending scheme, which has been expanded to 11 provinces and cities to help lower borrowing costs for the real economy.

The central bank had rated bank loans made to 3,022 companies, allowing banks to use their high-quality credit assets to secure relending, it said without giving specific details.

The central bank has taken a raft of policy measures, including cutting interest rates and banks' reserve requirement ratios, in a bid to support the world's second-biggest economy. Further policy easing steps are widely expected this year.

(Reporting by China Monitoring Desk and Kevin Yao; Editing by Sam Holmes and Jacqueline Wong)