Abstract:The investigation of set stow net fisheres in the Chang Jiang Estuary (120°10'-122°15'E;31°00'--31°42'N) were carried out in 1982 and 1983 respectively. Theresults are as follows:1. There were four set stow net fisheries in the Chang Jiang Estuary, they arethe deepwater stow net, floating stow net, fide net and boat stow net. Thier operationalgrounds were to be located in four districts: (1) from the mouth of Beisiyiao River inChongming Dao Island to Northwest zone of Sheshan Dao Island;(2) between theBeilonggang Port, Lao Gang Port, Tong Sha Bank and Jiuduan Sha Bank; (3) betweenthe mouth of Liu He River and wharf of Baoshan General Steel Plants;(4) the northern and southern flows of Chengxing and Hengsha Islands, and extend toWusong Estuary. The depth of fishjing ground generally dosen't excess 8M. The fishing period is from February to November.2. The catches consist of 61 species, belonging to fish, crustacean, jellyfish,cephalopoda and mammals respectively. In which, Coilia ectenes, C. mytus, Hemisa-lsnx prognathus, Palaemon annandalei, Eriocheir sinensis and Rhopilema esculentmare the main commerial species.3. The total number of net estimated only from Chongming, Baoshan, Chuanshaand Shanghai counties (1971--1982) were 4189 nets in average annually. The totalproduction is 3800 tons and the Coilis (youngs) account for 43.4% of total.The overfishing, water quality deterioration, brodening of the water way andthe partial changes of the substrate in fishing ground are factors resulting the declina-tion of the fisheries resources. It is suggest that the regulation on minimize and adjustthe number of set stow net must be adopted in order to protect and exploit fisheriesresources rationally.