The present invention discloses an antiforge method of certificate, and it is characterized by that a visible mark, a hidden mark and a filling code are set on the every type of the certificate, at the same time on the certificate the row-column reference point is set, the plane of the certificate can be divided into several zones, and the zone position code with different contents and various forms of expression can be filled in the zone self-defined by license issuing authority. The certificate self-body made up by adopting said invented antiforge method has the uniqueness in composition, appearance, arrangement, form and colour, etc. so that said certificate can not be imitated, and has the antiforge function. |