Wood-rotting fungi play an important part in forest ecosystems and are acommonly recognized bioindicator of their status. At present 166 species of 89 genera of aphyllophoraceous fungi are known for the Paanajarvi National Park and the surrounding area. Thirty-four indicator species of old and pristine forests (after Kotiranta, Niemelä, 1996) were recorded in the studied ecosistems proving the forest area to be unique. The greatests number of wood-inhabiting fungi (66 species) was find on spruce - the main forest formingtree species.