Abstract: On the basis of long-term study of expertise and experience (SEE), Collins put forward the concept of interactive expertise, and believed that interactive expertise is the third kind of knowledge between formal propositional knowledge and informal tacit knowledge. Interactive expertise means that an interactive expert can be fluent in the language of a professional field through verbal communication without fully immersing himself in the way of life in a field of expertise. This is what Collins calls“minimal embodied arguments”and “strong interaction hypothesis”. However, Collins misjudges the importance of tacit cognition, embodied cognition, and metaphorical cognition hidden behind interactive expertise, that is, underestimates the fundamental role of the phenomenological body that underpins interactive expertise. The physical conditions required for mastering interaction expertise are not“minimal”as Collins thinks, and Collins’ understanding of the body is biased towards reductionism, which is in sharp contradiction with the phenomenological “body-subject”holism. Therefore, there is no solid basis for characterizing interaction expertise as the third type of knowledge, and it still needs to be discussed.