Method and system for correcting distorted projector image and projector

The invention provides a method and a system for correcting a distorted projector image and a projector. The method comprises the following steps of: acquiring position data of the projector relative to a triaxial space from a locating device of the triaxial space arranged on the projector after the projector is switched on; comparing the detected position data with reference position data and acquiring position offset of the projector; calculating an adjustment position and an adjustment angle of a trapezoid optical correction device of the projector according to the position offset; and regulating the trapezoid optical correction device according to results. By the method and the system for correcting the distorted projector image and the projector, the distorted image caused by the position offset of the projector can be automatically, conveniently and accurately corrected.