Based on the taxonomic system of Nelson et al. (1993) ,a preliminary computerized identification system with groupaverage method of hierachical cluster analysis for the genus Fusarium was established. Three unidentified isolates, Fusarium sp. 1 F. sp. 2 and F. sp. 3 from Zea mays L. , were identified by use of this analysis. The results clearly showed that F. sp. 1 was identified as F. graminearum, F. sp. 2 as F. moniliforme and F. sp. 3 as F. subflutinans or F. proliferatum. The facts proved its applicability to comparison and identification of Fusarium.