The minor district (king amphoe) was established on 1 January 1988, when the four tambons, Pha Khao, Tha Chang Khlong, Non Po Daeng, and Non Pa Sang, were split off from Phu Kradueng.
The minor district (king amphoe) was founded on January 1, 1988, when four tambons—Pha Khao, Tha Chang Khlong, Non Po Daeng, and Non Pa Sang—were separated from Phu Kradueng.