Abstract: ‘T₄₁’，a strain of Trichodermasp.,is isolated by antagonism selection,which has suppression on the pathogen of vegetable blight.Trichobermasp.agent can be produced with maize stock powder by liquid-solid two-phase fermentation process.The suppression efficiency of ‘T₄₁’ on several vegetable blights is high and stable and it is more efficient than that of chemical fungicides.