Hangzhou in eastern China -- best known for the West Lake, a placid and much-painted tourist attraction -- was the only candidate city, a report by the country's official Xinhua news agency said.
Its sole candiancy made it a shoo-in for selection by the Olympic Council of Asia (OCA) at its congress in the Turkmenistan capital Ashgabat.
An OCA spokesman confirmed the decision to AFP, saying the body, the Chinese Olympic Committee and Hangzhou had already signed the hosting contract at the meeting.
China staged official celebrations in July after winning the Winter Olympics bid, beating out Kazakhstan's Almaty, despite concerns over its human rights record and Beijing's pollution levels.
The 2008 Games marked a major step forward for China on the international stage, and analysts say its Communist authorities still use major sporting events, such as the World Athletics Championships in Beijing last month, to burnish their credentials.
Susan Brownell, a visiting professor at Heidelberg University's Institute of Sinology, said inter-regional rivalry was also a motive.
