This study was conducted to investigate the effects of by Rhizobium meliloti, pathogenic fungi and pregermination time on the growth of alfalfa. Alfalfa was grown in pots in vinyl house in Chonnam Nati~al University from May 30 to August 24, 1996. These experiments were designed in a split-split plot method with Rhizobium inoculation(Non-inoculation, Inoculation) as the main plot, pathogenic fungi(F. culmorum, F. oxysporum, F. solcmi, R. solcni) as the subplot, and pregermination time(0, 24, 48 hrs.) as the sub-subplot, in four replications. Treatments of pathogenic fungi were lower than control in plant height and dry weight of shoot and root (p$lt;0.05), which were significantly different among pathogenic fungi. In plant height, there were not significant differences between the inoculations of Rhizobium and the noninoculations of Rhizobium at 6 weeks after seeding, but it was more increased in the inoculations of Rhizobium than in the non-inoculations of Rhizobium at 9 and 12 weeks after seeding(p$lt;0.05). At 6 weeks after seeding, the pregerminated plant grew taller than that of the non-treated, but the significant difference in the dry weight of shoot and root was not shown. At 9 and 12 weeks after seeding, the plant height, and the dry weight of shoot and root seemed to be greater on the pregermination compared to the nonpregermination.