Abstract: The inhibition rate of bacterial ZA1 obtained by dual culture method against potato pathogen Phoma foveata was 71.83%. The strain ZA1 was identified as Bacillus mojavensis based on morphology, physiological and biochemical characters, combined with 16S rDNA and gyrB gene sequence analysis. Inhibition rate of strain ZA1 against Alternaria solani, Stysanus stemonitis, Fusarium oxysporum and Colletotrichum coccodes were 64.30%, 41.05%, 61.42% and 74.92%, respectively. The control efficacy of strain ZA1 against potato gangrene was 64.31% by spraying fermentation broth with diluting for ten times on potato tube in storage period.