Diversity and structure of fungal communities on the Antarctic Polar Stations area on the King George and Nelson Islands have been investigated. The samples of natural damaged rocks (basalt and quartz), preliminary soil (under the mosses and lichens) as well as building materials (concrete, metal and wood) with attributes of biological colonization have been studied by complex of mycological methods. Sedimentation of spores from the air was made by standard air-borne sampling collector. As a result 66 species from 32 genera of micromycetes have been identificated. Most of them were isolated from the anthropogenic substrates. Some species were identificated in the samples of rocks, air and preliminary soils. There were big differences between outdoor and indoor environment. Only 25 species were common for both of habitats. The most of filamentous fungi are probably cosmopolites. The role of fungi in human environment in Antarctica is discussed.