The forest condition defined as a conserved area was according to the cabinet resolution on March 7 and 10, 1992. The Phu Lan Kha conserved area in Muaeng, Ban Khwao, Ban Nong Bua Daeng, and Kaset Sombun districts was according to the order of the Royal Forest Department dated December 13, 1996. That is, Mr.Surachai, Mr.Chamroen, forestry officers among 5 parts of national park, and head of Tat Ton National Park shall go on a preliminary explore of the conserved forest. In order to establishing a national park, they coordinated with the province office, public and private sectors, organizations, people, including Chaiyaphum and Nakhon Ratchasima forestry agencies.