The traditional Chinese medicinal (TCM) inspection on tongue features are always observed with naked eye, and the syndrome is differentiated depended only on experience. These disadvantages cannot but badly impact not only the inheritance but also the advance and development of TCM. Hence, to bring out the standardization and objectivity of TCM tongue inspection is a task urgently expected. Along with the advancing of modernized TCM research, to study the tongue feature with modern scientific and technologic approaches for making it more quantitative, objective and standardized becomes the main research orientations of tongue inspection. Taking computerized automatic reorganization of tongue feature as a main clue, the techniques involving collection, resolution and signature analysis of tongue feature were discussed in this paper.