Forest fire is one of the most frequent natural disasters and have very serious consequences. From 2014 to 2019, there were 1,868 forest fires in Vietnam, devastating 8,499 ha. Pine plantations are often burnt, when the fire spreads quickly, it is difficult to extinguish because pine plantations have a lot of burning materials, difficult to decompose, in burning materials containing resin so it is very easy to catch fire. There are approximately 400,000 ha of pine plantations in Vietnam, mainly Pinus massoniana, p. merkusii and p. kesyia. Isolating and screening cellulolytic fungi to help decompose burning material under pine plantation into organic humus, improving soil fertility and limiting the possibility of forest fires are one direction potential and great contribution to the prevention of forest fires in Vietnam. Fourty two fungal strains were isolated from soil and leaf litter in p. massoniana and p. merkusii plantations in Quang Ninh, Thanh Hoa, Lang Son, Cao Bang province and Ha Noi city. In which, 24 strains had strong and very strong cellulolytic activities, they belong to 22 species, 11 generas. The 17 strongest strains were belong to 15 species including Aspergillus chrysellus, A. ũavus, Cladophialophora immunda, Fomitopsis sp.l, Fomitopsis sp.2, Paecilomyces formosus, Penicillium adametzii, Pe. austrosinicum, Pe. sclerotiorum, Pe. singorense, Pe. yezoense, Talaromycespinophilus, Talaromycessọ., Trichoderma citrinovirideNiL Umbelopsis angularis.
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