Of the biographies of Xu Xun 許遜 collected in the Daoist Canon 道藏 , Xu taishi zhenjun tu zhuan 許太史真君圖傳 is the only one that includes illustrations. This paper attempts to analyze traditional images of Xu Xun, Patriarch of the Jingming Daoist sect 淨明道 , by studying texts outside the Daoist Canon such as Xu jing yang shi ji tu 許旌陽事蹟圖 , and exploring the relation between Xu taishi zhenjun tu zhuan and Xu zh jun xian zhuan 許真君仙傳 . This paper thus constitutes an initial study on the origin and development of traditional images of Xu Xun.