Abstract: The Lake Luguhu is locatedon the border between Northwest Sichuan Sheng and Sourth Yunnan Sheng,at long 100°50′E.by lat.27°40′N and at altitude of 2685 m.It's a beautiful alpine lake with many small islands,Maximum depth of lake in 73.2m.The transparency of water is up to 4.5m.There are abundant aquatic plants here,vegetation varies from one part to another because of differences in environment such as soil cover depth and transparensy of water.Acording to the dominant species and life-form of plants we recognized vegetation types as follows.

Key words: Lake Luguhu-expedition-geobotoanical