Prime Minister Hun Sen will spend five days in China next week at the invitation of his Chinese counterpart, Wen Jiabao.
Hun Sen will meet with Chinese President Hu Jintao and other senior leaders and will pay a visit to former king Norodom Sihanouk, who is in Beijing for medical treatment, the Ministry of Foreign Affairs said.
The Chinese Foreign Ministry said on its website Hun Sen would pay an official visit Dec. 13 through Dec. 17.
China has become a large supporter of Cambodia, providing millions of dollars in aid packages and investment in infrastructure, power and mining.
Cambodian officials say they expect Hun Sen to sign even more deals with China on this visit, though they declined to give details.
Foreign Minister Hor Namhong and Commerce Minister Cham Prasidh are both expected to accompany the prime minister.