President Xi Jinping met Cambodian Prime Minister Hun Manet in Beijing on Friday, Chinese state media reported.

"On September 15, President Xi Jinping met with Cambodian Prime Minister Hun Manet at the Great Hall of the People," broadcaster CCTV said, without providing further details.

As well as meeting Xi, Hun Manet is expected to hold talks with Premier Li Qiang and Zhao Leji, head of the Standing Committee of the nation's top lawmaking body, his spokesperson Meas Sophorn told the press at Phnom Penh International Airport.

He will then travel to the southern city of Nanning to attend the 20th Asean-China Expo.

Under Hun Manet's father and predecessor Hun Sen, Phnom Penh became one of China's closest allies in the region.

The visit will be one of Hun Manet's first abroad since becoming prime minister, after he attended a summit of Asean leaders in Jakarta last week. (AFP)