Forest fires are a major disturbance factor in forest ecosystems. We investigated the diversity of arbuscular mycorrhizal (AM) fungi in the rhizosphere of plants grown in areas experienced forest fire disturbances on Sanbiao Mountain, Qingdao, China. Five dominant plants, Vitex negundo,Lespedeza bicolor,Indigofera kirilowii,Zanthoxylum schinifolium and Deyeuxia arundinacea were selected based on the fire intensity of the area, and sub-divided into non-burned area, light burned area, moderate burned area, and heavy burned area. The results show that the colonization percentage and spore density of AM fungi decreased as the fire intensity increased. A total of 11 species in 3 genera of AM fungi were isolated in the non-burned soil sampling sites for all plants. There were 10 species in 3 genera, 9 species in 3 genera, and 8 specie in 3 genera in the light, moderate, and heavy burned areas, respectively. AM fungal species richness in the burned areas was lower than that in the non-burned area. The important value and dominant species of AM fungi were different in the burned and non-burned areas. Glomus geosporum, G. taiwanensis, Gigaspora ramisporophora, Gi. gigantean, G. formosanum, G. rubiforme, Acaulospora koskei, and A. thomii were the dominant species in the non-burned area. G. taiwanensis and G. geosporum were the dominant species in light burned area. G. taiwanensis and G. geosporum were the dominant species in the rhizosphere of Vitex negundo,Lespedeza bicolor,Indigofera kirilowii and Zanthoxylum schinifolium in the moderate burned area except Deyeuxia arundinacea. G. geosporum was the dominant species in heavy burned area. There were different effects of burned areas with different intensity on AM fungal community composition. It was suggested that forest fire reduce the diversity of AM fungi.