Gao You 高誘 of the Eastern Han 東漢 was the author of commentaries on the Huainan it 淮南子, the Lushi Chunqiu 呂氏春秋 and the Zhanguo ce 戰國策. As he tended to couch similar comments as well as glosses in similar wording, we can collate them to arrive at more reliable readings. Extant editions of the Huainan zi, including those published in the Song 宋, are not free from corruption. Gao You's commentary is no exception. This article attempts to compare Gao You's commentary on the Huainan zi and that on the Lushi chunqiu and the Zhanguo ce where there are duplications. It is hoped that this will be helpful to students of Han commentaries to early works.