Airborne air plane horizontal measuring method and system

The invention relates to an airborne air plane horizontal measuring method. The method comprises the steps that impulse signals which are transmitted by first positioning labels fixed to a transversehorizontal reference point and a transverse horizontal reference point of are received, and impulse signals transmitted by second positioning labels at feature points of the air plane is received; anair plane horizontal reference plane is established according to the impulse signals transmitted by the first positioning labels, and an air plane three-dimensional coordination system is establishedbased on the horizontal reference plane of the air pane; three-dimensional coordinates of the second positioning labels in the three-dimensional coordination system are positioned; whether or not theair plane deforms is judged according the three-dimensional coordinates of the second positioning labels. The method and the system have the advantages that on-site arrangement does not need to be conducted when measuring is con