Bactericidal composition containing fluopicolide and cyflufenamid

The invention relates to a bactericidal composition containing fluopicolide and cyflufenamid. The bactericidal composition is a binary composition of effective components of fluopicolide and cyflufenamid, wherein the mass ratio of the fluopicolide to the cyflufenamid is (6-42): (42-6); and the bactericidal composition comprises 1-80% of the fluopicolide and the cyflufenamid in percentage by mass and the balance of pesticidally usable and acceptable auxiliary components. The bactericidal composition containing fluopicolide and cyflufenamid has dosage forms of emulsifiable oil, a suspension, wettable powder, water dispersible granules, a water emulsion and a microemulsion and is mainly used for controlling grape downy mildew, late blight, and powdery mildew of various crops.