For cabbage black rot, a disease caused by bacterial infection, use zhongshengmycin, or acetozolin, or polyantimycin, or agricultural streptomycin, or octostrobin acetate, or Chlorobromoisocyanuric acid, or copper chloride, or copper thiophene, or copper thiophene, or copper quinoline, or copper hydroxide, or cuprous oxide, or copper oxychloride, or copper metal frost, or complex Ammonia copper, or copper rosinate, etc. are used for prevention and treatment.