As one of the main types of merchant ships in the Beiyang(literally Northern O-cean)maritime transportation during the Qing dynasty,Shachuan-style ships(also known as junks)play an important role in commodity trade and cultural exchanges.However,records re-garding the geographical distribution of junks in the lower reaches of the Yangtze River are rather vague.By analyzing ordinances regarding merchant ships going to sea promulgated by the govern-ment and the names of junks recorded in documents about three maritime transportation tasks dur-ing the Daoguang and Xianfeng periods,this paper finds out the specific geographical origins of the junks.Spatially,the counties along the Loujiang River,Liuhe River,and the Yangtze River estuary were the core areas of distribution,gradually spreading to the surrounding counties and showing an imbalanced spatial pattern.Temporally,there were differences in the proportion of junks from the same county participating in the three maritime transportations.The formation of this geographical distribution pattern of junks in the lower reaches of the Yangtze River is the re-sult of the interaction between the Qing government's maritime governance and the different condi-tions of the counties in terms of geographical environment,society,economy,waterway transpor-tation,and modern port opening.