在二十世紀的學術史上，學界有關王國維與羅振玉學術聯繫的考察，多是從金石、甲骨文等領域起步，而詞曲才是二人學術結緣的起點。時至清末，羅振玉不僅將所藏詞曲借予、相贈予王國維，而且對王國維詞曲著述的出版竭力提供幫助。旅日之後，雖然王國維漸漸將學術興趣調整出詞曲，但是羅振玉時常與王國維圍繞詞曲版本、作家史實等問題進行討論，其在刊印詞曲書籍時亦多有請教王國維。王國維還將自己的詞曲書目借予羅振玉，由後者編入大雲書庫藏書目錄中。王國維去世後，羅振玉、羅振常分批將王國維舊藏詞曲悉數賣予海內外藏家。梳理羅振玉與王國維詞曲研究之關係，這對於理清二人的學術聯繫，考察王國維詞曲研究活動的開展，乃至窺探民國時期的學人生態，都具有重要意義。

In the history of the twentieth-century scholarship, the academic connection between Wang Guowei and Luo Zhenyu is believed to have started from their shared interest in stone inscriptions and oracle bones. However, it was actually the study of ci 詞and qu 曲 that sparked their academic relationship. At the end of the Qing Dynasty, Luo Zhenyu not only lent his collection of ci and qu to Wang Guowei, but he also tried his best to help get Wang’s studies published. After their arrival in Japan, Wang gradually became interested in other issues; however, Luo still often spoke with Wang about textual editions, historical facts regarding authors, and other issues related to ci and qu. He moreover often consulted Wang before publishing books on these topics. In addition, Wang lent his bibliography on ci and qu to Luo, who compiled it into the catalog of the Dayun library. After Wang’s death, Luo Zhenyu and Luo Zhenchang sold his collections to collectors at home and abroad in batches, so as to fully compensate the Wang family. It is argued here that shedding light on how Luo Zhenyu and Wang Guowei advanced the study of ci and qu, clarifying their academic relationship, investigating the development of Wang Guowei’s research, and also exploring the scholarly ecology of the Republican Period are of great scholarly significance.