PROBLEM TO BE SOLVED: To provide a detecting capability testing method for magnetic sensors that makes possible, during operation of dynamic detection, accurate determination of whether or not an appropriate detecting operation is done.SOLUTION: In a detecting capability testing method for magnetic sensors by which a magnetism detecting medium is shifted toward a magnetic sensor to detect a printing pattern of a magnetic body printed on the magnetism detecting medium, the printing pattern is configured of a basic pattern and an additional pattern, appropriateness is determined if the amplitude of a detection signal for the additional pattern is not smaller than 1/2 of the maximum amplitude of a detection signal for the basic pattern, while inappropriateness is determined if the former is smaller than 1/2 of the latter.
