The authors'1975-1995 comprehensive investigation of freshwater Gastropoda showed that Yunnan Province is home to 2 subclasses, 2 orders, 10 families, 34 genera, 124 spcies of freshwater Gastropods. According to their different roles they can be described as edible,of medical value, used as bait or feed, of harm to agriculture, economic crops, domestic animals,etc. The fauna, characteristics, distribution and abundance of Gastropoda species are also discussed.