The state-owned lender, which will provide money for the fund, plans to invest in real estate projects and turn them into affordable rental houses, CCB said in a statement late on Friday.
Beijing has been stepping up efforts to aid a real estate sector hit by debt buildup, mortgage boycotts and sluggish sales. Property and related sectors such as construction account for more than a quarter of China's economy.
The authorities have allowed affordable rental houses to be listed in the form of real estate investment trusts (REITs), opening a fresh financing channel for the business.
Reuters reported in July that China planned to launch a real estate fund to help property developers resolve a crippling debt crisis. The fund would initially be set at 80 billion yuan through support from China's central bank, with CCB contributing 50 billion yuan, a source said.
China's policy banks and local governments have also been setting up funds to help cash-strapped developers finish construction of pre-sold properties, as protests by home buyers spread.
(Reporting by Jason Xue and Brenda Goh; Editing by William Mallard)