Abstract：Metacognition is individuals' knowledge and adjustment of their own cognitive activity. Metacognition in different academic fields and disciplines has various regulations and traits, that is, problems of domain generality and domain specificity have always existed in metacognition. Most researchers approve that metacognition first exists in a specific domain in childhood, while with the ontogenetic development, adult metacognition will be generalized in various domains and become a cross-domain general ability. Future research can be combined with the methods of cognitive neuroscience to further determine the mechanism of this transformation.
