The present study was designed to investigate the combine effect of Trichoderma hamatum and host-specific Rhizobium sp. of Vigna mungo on growth and biochemical parameters of same legume. The results proved that T.hamatum and host-specific Rhizobium sp are compatible with each other and their combine use was found effective not only in improving the growth parameters including lengths of roots & shoots and fresh biomass of experimental crop but also increasing the total chlorophyll, carbohydrate and crude protein contents as compared to control plants (p<0.05). Similarly, the amount of both nitrogen and phosphorus was significantly increased in leaves of the same legume (p<0.05). Therefore, T.hamatum could be a good alternate of chemical fertilizer and fungicide for improving the growth and productivity of V.mungo.