Abstract: Although the research for evaluation theory has been fruitful oriented in epistemology and axiology, it is still restricted in the mode of subjective and objective bodies. This essay proposes a thinking of ontologyorientation, which can be described as follows: the pursuit of signification of the “value”, that is, the pursuit of human meaning to realize ontologyorientation; the probe into the language activity of commenting, that is, the probe into language ontology to usher its deep basis; and the seek for the practical ontology of evaluation, that is, the evaluation theory characteristic of being suitable for rule and intention just rooting in practice.

Key words: ontology, signification, language, practice, evaluation theory