With the development of corpus linguistics, more and more corpus tools have come into being. As a relatively powerful annotation tool, UAM corpus tool is worth linguistic scholars’ attention and promoting. This paper aims to review the application of UAM in linguistic field, and tries to summarize the advantages by comparing it with other corpus tools, like AntConc and SPSS. It shows that UAM is more effective and practical with comprehensive functions. Inevitably, due to the combination of both annotation and corpus statistics, users may need extra time to get familiar with the operation procedure and to know what functions a corpus provides before doing research. In a word, UAM corpus tool is a suitable software for corpus annotation and exploration.