The invention relates to a traditional Chinese medicine bactericide for preventing and controlling soft rot of konjak, and belongs to the filed of insect pests and plant disease prevention and control and biological pesticide. The traditional Chinese medicine bactericide comprises the following components by weight percentage: 12 to 36 percent of garlic extract, 3 to 12 percent of Chinese goldthread rhizome extract, 3 to 10 percent of Flos Lonicerae leave extract, 3 to 5 percent of wettable powder accessory ingredient for farm chemical, and the balance being packing carrier for the farm chemical. The components are compounded into the traditional Chinese medicine bactericide wettable powder which has obvious sterilizing effect on pathogen of the soft rot of konjak, namely Erwinia Aroideae Holland for preventing and controlling the soft rot of konjak. The traditional Chinese medicine bactericide wettable powder is environment-friendly, has strong specificity, is better than chemical agents to prevent and control the soft rot of konjak, has more than 65 percent of relative prevention effect, and can improve the yield of konjak when applied to konjak production, as proved by experiments.