Zhenghe County () is a county of northern Fujian province, People's Republic of China, bordering Zhejiang to the north. It is under the administration of the prefecture-level city of Nanping. The Min-Bei dialect, or Northern Min (Guing'ei Di) prevails in Zhenghe County.
Zhenghe became a county in 1000AD, but its previous name is Guanli (). In 1115AD, the emperor appreciated the Gongfu tea from Guanli County. He delightfully named the county after his reign title "Zhenghe", which lasts till now.
Zhenghe is the second largest producer of chestnuts in China.