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) came into existence on January 1, 1988, when these four tambons—Pha Khao, Tha Chang Khlong, Non Po Daeng, and Non Pa Sang—were detached from Phu Kradueng.