The depth of main orebody with low temperature and warm water in Kangji-awan mine.Shuikoushan Bureau of Mine, is great. The top of this orebody was covered with the large-area aquifer with a natural hydraulic relation to the flooding area of Xiang River. The mining is very difficult, and it is a typical mine of underwater mining. The au-thor makes an introduction to constitution parameters of stope in mining district, selection of mining methods for the first mining section, arrangement of development work and en-forcement of mining and filling technology as well as method and result of ground-pressure observation of stope. These measwres provide a reference for the similar mines.