Academic search refers to professional search engines specialized in retrieving academic papers, research findings, and scientific literature, integrating globally renowned academic databases and journal resources including CNKI, Wanfang, VIP, Web of Science, Scopus, arXiv, and bioRxiv. These search engines provide powerful features like keyword search, advanced filtering, citation tracking, impact factor queries, and H-index analysis, helping researchers and students quickly locate academic resources in related fields and supporting value-added services like literature export, bibliometric analysis, and academic impact evaluation.