[1] Xingu State Park was created by decree 3.585 of 7 December 2001 with an area of about 134,463 hectares (332,270 acres).

It was redefined by law 8054 of 29 December 2003, signed by the state governor Blairo Maggi, which reduced its size to 95,024 hectares (234,810 acres).

[1] The reduction was justified on the basis of a referendum of the people of Santa Cruz do Xingu by technicians from the State Environmental Foundation (FEMA).

The agricultural frontier was limited by the amount of protected land, some of which had to be released for expansion of food production.

The objectives are to protect and conserve the various ecosystems and to prevent human actions that would jeopardise the future of the many indigenous groups found in the park.