The utility model discloses a device of short -term test is carried out high accuracy plane, including bottom plate, plane air bearing, protective housing, nozzle, chair, counter weight interface and control assembly, protective housing sets up on the bottom plate, and the chair setting is on protective housing, and horizontalization face air bearing is divided into to the bottom plate, and the nozzle provides ging forward of detection device and turns to power, and the nozzle symmetry that provides the power that gos forward is installed in the both sides of bottom plate, provides nozzle install in the end of bottom plate that turns to power, and control assembly control detection device move on the plane or be static. The utility model discloses can realize the experimental planar flatness detection work of ground air supporting emulation, whether effective large tracts of land plane of measureing possesses multi freedom air supporting simulator test conditions, and the cost is lower, operate more portably, easily integrated and assemble.