A rocket carrying the Shenzhou 9 spacecraft has been moved to a launch pad in the north-west of the country.
According to state news agency Xinhua, it will carry three astronauts - possibly including a woman - to the Tiangong 1 space station module.
This will be China's fourth manned space flight and its first since 2008.
Last year, China completed a complicated space docking manoeuvre when an unmanned craft docked with the Tiangong 1, or "Heavenly Body", by remote control.
The astronauts onboard the Shenzhou 9 spacecraft will also dock with the Tiangong 1 - an experimental module currently orbiting Earth - and carry out scientific experiments on board.