Honglu Well stele is an important source of the research on the history of northeast border areas.It is generally believed that inscription"Hongluqing Cuixin 鴻臚卿崔忻"on the stele could be seen as the same person named"Langjiang Cuixin 郎將崔訢"in the record of historical literature;and inscription "xuanlao 宣勞" and "cefeng 冊封" could be explained as the activities in a mission to Bohai.However,there are several doubts surround the interpretations on the inscription.This paper argues,on the basis of the analysis of the time,destinations and goals of the mission,that Hongluqing Cuixin or Langjiang Cuixin was not the envoy in two stages of the single mission but the envoy of two missions,and that the"Mojie"people in the inscription was not the subordinate of Dazorong 大祚榮 but the tribe whom Hongluqing Cuixin conveyed the Tang empire’s regards to(in the inscription,the mission was called as"xuanlao").