People frequently use the Internet for information search, but few people realize that the high fluency and high assistance of Internet search can lead individuals to mistakenly treat external information obtained by Internet search as their own internal knowledge, overestimate future performance without the help of Internet information. From the metacognitive perspective, this paper explored how Internet search induces overconfidence, and summarized current interventions to reduce the overconfidence caused by Internet
search. Future research can further investigate the moderating effect of individual-level variables on this phenomenon. Researches can also focus on the impact of search information types on overconfidence, and the impact of search tool characteristics on individual cognitive biases.