Bactericidal composition

The invention provides a bactericidal composition. Effective ingredients of the bactericidal composition are SZG (A) and a methoxyl acrylate bactericide (B), wherein the weight ratio of (A) to (B) is (1: 60) to (60: 1) and preferably is (1: 30) to (30: 1). The methoxyl acrylate bactericide (B) may be selected from azoxystrobin, kresoxim-methyl, trifloxystrobin, picoxystrobin, fluoxastrobin, enestroburin and the like. Through compounding the effective ingredients (A) and (B), the bactericidal composition has an obvious synergistic effect, and the amount of application of each single agent can be effectively reduced. The composition can be prepared into any preparation form through adding adjuvant ingredients, which are allowed to be used in other pesticides, into the composition. Compared with the SZG single agent and the methoxyl acrylate bactericide single agent, the bactericidal composition has an obvious synergistic effect and is mainly used for preventing and treating diseases of crops such as fruit trees, vegetables and cereals.