1. A microbead automatic recognition method comprising: acquiring an image of a circular surface of a cylindrical microbead having a recognition pattern created on said circular surface and a plurality of reference points also created on said circular surface, each of two of said reference points located on a circumference of at least one of two concentric circles sharing a common center with said circular surface and having diameters different from one another, wherein said two reference points are not both located on a straight line which passes through said common center and the two concentric circles surround the recognition pattern; and acquiring information on the rear/front and/or orientation of said cylindrical microbead from said acquired image on the basis of the positions of said reference points.