State news agency IRNA said Xi, accompanied by three deputy premiers and six ministers as well as a high-ranking business delegation, was greeted at Tehran airport by Iranian Foreign Minister Mohammad Javad Zarif.
The president, who has already visited Egypt and Saudi Arabia, was to meet tomorrow with his Iranian counterpart Hassan Rouhani and the Islamic republic's supreme leader, Ayatollah Ruhollah Khamenei, according to local media.
Beijing is Tehran's top customer for oil exports and trade between the two countries was worth USD 52 billion in 2014.