1. A method for instantly recognizing and positioning an object, comprising steps of: a) wirelessly searching a wireless identification of the object; b) capturing a plurality of images of the object by rotating a predetermined angle for each image capture; c) determining a 2D center coordinate (x, y) of the object based on a center coordinate (x w , y w ) of the wireless identification of the object by point to point communication; d) transforming the captured images of the object according to the 2D center coordinate (x, y) of the object to acquire a 3D pattern of the object, and comparing the 3D pattern of the object with 3D patterns pre-stored; and e) if the 3D pattern of the object matches with a pre-stored 3D pattern, calculating a distance between a plane defined by the X and Y axes of the object and a position where means used for capturing the images of the object is located to determine a coordinate z for the object, thereby obtaining a 3D center coordinate (x, y, z) of the object to recognize and position the object.