Meeting in Beijing for the 27th annual meeting of the non-governmental Association of Space Explorers (ASE), astronauts from Russia, the US and other countries visited Beijing Space Flight City, one of China's major space science and technology facilities.
China's space station which is currently undergoing experimental tests is expected to be fully constructed by 2022.
The Russian station, Mir, which is currently in orbit is expected to be scrapped by 2020.
China sent Tiangong-1, its first space laboratory and target spacecraft, into orbit in September 2011.
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Zhou Jianping, chief engineer of China's manned space programme, said in September 2013 that China is willing to provide platforms for experiments for countries and regions to peacefully use outer space and foreign astronauts are expected to board China's space station.
"We are quite willing to cooperate with China. In terms of the space station programme, the two sides can cooperate in biology, space science and technology, life support systems and others," said Russian cosmonaut Sergei Avdeev, who spent over 748 days on the Mir Space Station, state-run Xinhua news agency reported.
Yang Liwei, now deputy head of China's Manned Space Agency, said that China has reserved some platforms in its space station for cooperation with other countries.
China has designed interfaces on its space modules so that they can dock with those of other countries.
"The space station is an interesting place where crew members with different origins and cultures work together because we have the same interests and passion for space exploration," said American astronaut Pamela Ann Melroy, who commanded a mission on space shuttle Discovery, which docked with ISS in 2007.