Disclosed is a method for recognizing a printed circuit board fiducial mark in order to decide an origin point in a chip mounter so that electronic parts can be mounted on a desired position of the printed circuit board. Since the method can be used for a distorted image, it can exactly recognize a damaged object as well as a general object. The method can also reduce a calculation amount relative to a polarity number of a candidate object when the candidate object has the polarity number. The method can recognize a candidate object of the same pattern fiducial mark regardless of its size.