[Problem] To provide a bacterial plant disease control agent which has a stable plant disease control effect at real crop production sites and which can be safely used as a biological pesticide. [Solution] By using in combination, as active components, live bacteria, or a culture containing said live bacteria, of a strain belonging to the genus Mitsuaria having a bacterial plant disease control effect and a strain belonging to the genus Ralstonia not pathogenic to plants and having a bacterial plant disease control effect, it is possible to provide a bacterial plant disease control agent such as a vegetable wilt disease control agent or a surface rot control agent.
