China's reduction of the reserve requirement ratio by 0.5 of a percentage point came into effect on Thursday, Xinhua News reported on the same day.
The first RRR cut of the year is projected to pump about 1 trillion yuan into the market, the report said.
The RRR drop to zero for auto financing and leasing firms also took effect Thursday.
The move is part of a broader push, including rate cuts and relending support, as China counters global economic pressures.