The CBS, valued at 5 billion yuan (about 709 million U.S. dollars), is open to primary dealers for bidding at a fixed rate of 0.1 percent, the central bank said in a statement.
The swap will be due on Sept. 29, 2020, said the statement.
On Monday, the central bank skipped reverse repos, citing reasonably sufficient liquidity in the money market.
The CBS scheme allows dealers to swap the perpetual bonds they hold for central bank bills, which will effectively boost market demand for perpetual bonds but have a neutral impact on liquidity in the banking system.
Perpetual bonds are fixed-income securities with no maturity date and are not redeemable but pay a steady stream of interests forever.