The invention provides the application of diallyl monosulfide in preventing/or treating peripheral nerve injury caused by n-hexane, belonging to the technical field of pharmaceutical preparations. Theinvention adopts diallyl sulfide to interfere with peripheral neuropathy induced by rats exposed to n-hexane, and evaluates the intervention effect. The results showed that diallyl sulfide had a goodeffect on peripheral neuropathy induced by n-hexane poisoning in rats. Moreover, the FDA proposed in 2005 that diallyl sulfide can be used as a food additive, so it is very suitable for the long-termuse of n-hexane occupational exposure population. The research of the present invention is helpful for exploring the mechanism of the above results, and has important clinical application value in preventing and treating peripheral nerve damage caused by n-hexane; and the invention opens up a new pharmaceutical use for diallyl monosulfide and other clinically safe bioactive ingredient of garlic.