Abstract: At present, most advocates of scientific practice claim that investigating of knowledge should not be confined to the epistemology but to the ontology. Thus, the local knowledge of “Rouse” has been widely discussed. Among them, Latour's view is the most radical,he claim the knowledge ontology to get rid of the subjectivity and the traditional dualism. However, the defect of this claim is obvious and difficult to overcome.Because non-human actors does not has the autonomy of the conscious people,at the same time,Latour has given all actors agency to erase the essential difference of them. In fact,before Latour, Polanyi has demonstrated the tacit root of knowledge and illustrated the inner relation between knowledge and human beings.In addition,Planyi unified the investigation and discussion of knowledge between epistemology and ontology.it may be a way to reflect and criticize knowledge ontology.