Application of sulfa drug composition in preparation of medicine for treating foot odor

The invention provides new medical application of a sulfa drug composition and in particular discloses application of the sulfa drug composition in preparation of medicine for treating foot odor. The dosage form of the medicine for treating foot odor is the dosage form suitable for being directly applied or sprayed or smeared on one or more places of socks, feet, insoles and the inner parts of shoes, and the preferred dosage form is powder, a solution, a cream or a gel agent. The medicine for treating foot odor prepared according to the sulfa drug composition can directly act on one or more places of the socks, the feet, the insoles and the inner parts of the shoes, can effectively kill bacteria causing odor and inhibit growth and breeding of the bacteria so as to avoid odor, and can fundamentally and quickly destroy the growth environment of the bacteria causing odor, therefore having a significant effect.