Objective To acquire the optimum preservatives compounding to inhibit Bacillus thuringiensis.Methods The inhibitive effect of preservatives on Bacillus thuringiensis was examined by susceptibility test paper and minimum inhibitory concentration(MIC) methods;the optimized combination of preservatives was screened by orthogonal design,and the inhibitive effect of the best combination of preservatives was also checked.Results The results showed that Bacillus thuringiensis were not sensitive to sodi...