Abstract: Objective To investigate the effect to growth of superficial fungi by exposure to germicidal UV light.Methods Laboratorial fungi consisted of Trichophyton rubrum,T.mentagrophytes,M.canis Bodin,E.floccosum,C.albicans,C.glabrata,C.parapsilosis,C.tropicalis,C.krusei,Penicillium spp.,Scopulariopsis spp.,Acremonium spp. were inoculated on SDA that were exposed to UV light. All the tested fungi were divided into groups by exposure power, exposure distance and exposure time and morphological variations of hyphae and spores were observed with transmission electron microscope.Results M.canis Bodin,E.floccosum,C.albicans,C.parapsilosis,C.krusei stoped growing under exposure to germicidal UV light while others managed to be alive.Conclusions Germicidal UV light has different disinfection to some common superficial fungi, the degree of the disinfection depended on exposure power, distance and time.

Key words: superficial fungi, UV light, transmission electron microscope