A lot of landmines are buried in many troubled countries. The humanitarian demining robot "Gryphon" can reliably detect mines. Gryphon also has to make marking on mine positions which are detected, but does not have a marking system yet. Marking systems need marking precision, marking speed, and reliability. This research proposes effective two types of marking systems. One of the systems uses plates, another uses paint. Each marking system has both good and bad points, so this research propose marking systems which are made the most of good points and restrained bad points. This paper explains the marking systems concept and mechanism, and also presents results of tests.