Semi-solid fermentation is widely used in the process of wine making, which can effectively overcome the shortcomingsofliquid and solid state fermentationas researches of Liu and Gu8, 9. The research usefood waste as raw materialsto study the feasibility of producing biological pesticide by semisolid fermentation, and analyze the influence of inoculation amount, initial pH, the salt content and oil content during the process.The result can provide theoretical reference to large-scale production ofBt biological pesticide