Professor Nie Youcai’s essay，An Investigation of Hunchun Local Government Patrols in the Nanhai Area in Qing Dynasty，examined island patrols in Nanhai under the control of Jilin. The government tightly controlled the patrol of Nanhai throughout the Qing Dynasty，with the coastal area from the estuary of Tumen River to the mouth of Suifen River garrisoned by soldiers from Hunchun，and the overland area of Nanhai east to Suifen River including mountain farms northwards patrolled yearly by soldiers under the Vice Commander-in-chief of the Ningguta Yamen. However，patrolling the waterway in Nanhai，including Seorenggi islands，had been always done annually by soldiers under the Assistant Commandant of the Hunchun Yamen. In his essay，Professor Nie did not distinguish land patrols from water patrols， which may lead to some misunderstandings about patrolling staff，time and route. My paper will re- examine this problem based on Manchu and Han language archival records.