Pengzhou is a county-level city in Sichuan, China, some 19 km (11.81 mi) northwest of Chengdu. There is an expressway, free of charge to 川A and 川O vehicle holders, that connects Chengdu and the suburb, Pengzhou. It has an area of 1420 square kilometers and a population of 803,400 in 2009. Pengzhou is famous for being one of the three national bases of peony plantation and one of the five national bases of vegetable plantation and merchandise.
Pengzhou's industry varies from parmaceutical to petrochemical. The newly-built oil-refinery attracts a total investment of 38 billion yuan, considered to be the biggest single investment of Sichuan Province since 1949. Like other regions around the area, Pengzhou was badly affected by the 2008 Sichuan Earthquake.