A large amount of research in contemporary Chinese art and aesthetic field is related to ontology.However,"On-tology"is first and foremost a philosophical category,and the so-called"ontological"problem is first and foremost a philo-sophical one."Ontology"is an inherent concept in China,while"ontology"is entirely a Western concept,which is a u-nique metaphysical form in Western history.Considering the significance of the concepts of"noumenon"and"ontology",and the usage of these concepts in contemporary Chinese philosophy,art studies,aesthetics and other related fields,we'll find that in fact there is only one ontology named the philosophical"ontology".Some quite common terms such as"Aes-thetics Ontology","Art Ontology",and so on,are not true"ontologies".These terms actually mean"ontological funda-ment"in philosophy,if they are neither some kinds of misrepresentation nor another way of expression of"Ontological Commitment"in specific fields.