The invention provides a rapid identification method for image information. The method is characterized in that target image information is expressed via a numerical value matrix or sequence consisting of a first value and a second value; a database containing all kinds of image information is built, a reference numerical value matrix or sequence consisting of the first value and the second value is used for expressing reference image information in the database, an array of an target image is divided into a plurality of parts, and an array of a reference image in the database is divided into an equal number of parts; integral wholes and parts at corresponding positions of the arrays of the target image and the reference image are respective compared with each other; if comparison is successful, content of the first values and the second values in the parts are further subjected to detailed comparison operation till a complete comparison success is attained, and reading operation can be conducted. First rough comparison operation is conducted, detailed comparison operation is performed following successful rough comparison, a phenomenon that all reference images in the database are subjected to the detailed comparison operation can be prevented, matching rates of information searching and searching efficiency can be improved, and time spent on matching operation can be reduced.