The invention relates to a two-dimensional array code which comprises multiple contoured code characters arranged in a two-dimensional array and a positioning mechanism, wherein each code character corresponds to a bit set for representing information, and adjacent code characters in the row direction of the two-dimensional array have equal center distances; and the positioning mechanism positions the dimension and/or the direction of the two-dimensional array formed by the arrangement of the code characters. The two-dimensional array code greatly lowers the assigning cost of the two-dimensional code and greatly improves the operating convenience of users, and the user mobile terminal has good compatibility with the two-dimensional array code. Besides, the safety and the stability of the overall system are greatly improved, and therefore, the two-dimensional array code is applicable to the present network application environment.