The invention provides 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 for each image capture; c) determining a 2D center coordinate (x, y) of the object based on a center coordinate (xw, yw) of the wireless identification of the object; d) transforming the captured images 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 and obtaining a 3D center coordinate (x, y, z) of the object to recognize and position the object. The invention also provides a system and a processor enabling the method, and use of the system.