The invention relates to a bactericidal composition containing thifluzamide and triazole compounds. The bactericidal composition comprises an active component A and an active component B, wherein the active component A is selected from thifluzamide, and the active component B is selected from one of metconazole, triticonazole, imibenconazole or fenbuconazole; the weight proportion of the effective active component A to the effective active component B is (1-80 percent): (1-80 percent); and an accessory ingredient and an excipient are added into the effective active components to prepare wettable powder, water dispersible granules, a suspending agent, suspended emulsion or a suspension seed coating agent. The bactericidal composition provided by the invention is used for preventing and curing rice blast, banded sclerotial blight, septoria nodorum, a rust disease, powdery mildew, anthracnose, botrytis, downy mildew, alternaria mali Roberts, a rot disease, a tan disease, cladosporium cucumerinum, leaf spot, an epidemic disease, a black rot disease, a brown spot disease, a scab disease and leaf blight and has the effects of less dosage, rain washing resistance and obvious synergia.