The minor district (king amphoe) was created on 5 March 1981, when the four tambons, Si Kaeo, Phing Phuai, Sa Yao, and Tum, were split off from Kantharalak district.
The minor district (king amphoe) was established on 5 March 1981, when the four tambons, Si Kaeo, Phing Phuai, Sa Yao, and Tum, were separated from Kantharalak district.