Nie Haisheng is a major general of the Chinese People's Liberation Army Strategic Support Force (PLASSF) in active service as an taikonaut and the third commander of the PLA Astronaut Corps (PLAAC). He was a PLA Air Force fighter pilot and director of navigation.

Shenzhou 6 was the second human spaceflight of the Chinese space program, launched on October 12, 2005, on a Long March 2F rocket from the Jiuquan Satellite Launch Center. The Shenzhou spacecraft carried a crew of Fèi Jùnlóng (费俊龙) and Niè Hǎishèng (聂海胜) for five days in low Earth orbit. It launched three days before the second anniversary of China's first human spaceflight, Shenzhou 5.