46 bacterial strains were isolated from root-knot nematode infected tomato roots, 13 of which could inhibit the growth of Ralstonia solanacearum in vitro with the inhibition zone diameter ranging from 7.1 mm to 26.3 mm on NA plate, and 12 strains of them suppressed the growth of several plant pathogenic fungi. In the greenhouse tests, bacterial wilt disease caused by Ralstonia solanacearum was controlled effectively by the isolates EN5, EN15, EN01 and EN16 with the average control efficacy of 70.8...