In the process of tracing the name of five hundred Arhats, we found the "Luo Rui's Manuscript" in the Southern Song Dynasty. This manuscript is compared with the Stone Carving of Arhat Honorific Title in the Qianming Temple of JiangYinjun and the Monument of 500 Great Arhat Saints in Bailong Cave, Guangxi Province, and we come to know that the name of 500 should be directly copied from the Arhat Chapter, Bodhisattva's name Sūtra, thus correcting the mistake that the names of 500 were invented by Chinese people. At the same time, some new historical materials are used to prove that Daoqian, the founder of Jingci Temple in Hangzhou, did not build the statue of 500 Arhats, and clarify the misunderstanding of a poem by Su Dongpo and Emperor Qianlong about the origin of the statue of 500 Arhats, all these would further improve the level of research on the traceability of Arhats.