Caijia is a city located in China. It serves as a geographical location within the country's administrative divisions.
The region is notable for being the center of the Caijia language, an endangered Sino-Tibetan language. This language was first documented by Chinese researchers during the 1980s and is spoken primarily in the west of the Guizhou province, specifically centered on Bijie.
Linguistically, Caijia has been characterized by various authors as either a relative of Bai or an early split from Old Chinese. In specific areas such as Xingfa in Hezhang County, local speakers maintain distinct identities regarding their linguistic heritage.