Depending on the different causes of foot odor, you can choose different medications to soak your feet to deodorize, such as hyperhidrosis can use alum solution, ellagic acid solution to soak your feet; ringworm of the feet can be used to soak your feet with bittersweet salicylic acid powder; fossa keratolysis can be used to soak your feet with potassium permanganate solution. 1. Hyperhidrosis is due to local sweat gland secretion is too exuberant and lead to a disease, because too much sweat will lead to bacterial growth and thus produce a bad smell, so need to use some of the astringent and antiperspirant medication soak to be able to improve the symptom of smelly feet, such as 5% alum solution. 2. Tinea pedis caused by foot odor and local skin infections related to ringworm, in the treatment measures need to choose anti-fungal drug therapy, such as salicylic acid, coral ringworm net solution and so on. 3. Vulval keratolysis belongs to a bacterial infection disease, can be manifested as sweaty feet, viscous increase and accompanied by odor, can be used externally with potassium permanganate solution for soaking sterilization, improve the symptoms of foot odor. For various causes of foot odor, we must maintain good hygiene habits, change shoes and socks, and if necessary, can be given medication under the guidance of a doctor.