Lu's representative works of philology are as follows

Lu Fayan is a philologist and philologist in ancient China, and his masterpiece is Qieyun. Qieyun is a book about the phonology of Chinese characters, which systematically sorts out the phonetic and prosodic rules of ancient Chinese characters, which is of great significance to the study of phonology and philology of ancient Chinese. The compilation of this book took many years. Lu Fayan sorted out a complete phonological system by studying ancient documents and rhymes, which provided important reference materials for later researchers.