The invention provides an E13B image interpretation method mainly aiming at interpreting numbers and symbols in a check reading code printed with magnetic ink on a check, and defining a plurality of feature areas for each of the numbers and dividing each of the numbers into a plurality of blocks, and then interpreting according to whether an amount of magnetic ink being in the feature areas and a magnetic ink density between the blocks, and also generating a plurality of target pixels for each of the symbols, and then interpreting according to a relative position and a size of the target pixels.