Foot odor and foot disease are two completely different diseases. It is not useful to take vitamin B1 for foot odor because foot odor is a skin disease caused by fungal infection, and treatment is based on antifungal drugs, such as oral itraconazole and terbinafine tablets; topical ketoconazole ointment and miconazole ointment, etc. It presents as erythema, papules, blisters, maceration, and vesicles on the foot or between the toes or on the lateral edge of the foot, accompanied by severe itching. Foot odor is caused by vitamin B1 deficiency, and vitamin B1 supplementation is effective in the treatment of foot odor. Vitamin B1, also called thiamine, is mainly found in foods such as coarse grains, beans, peanuts and lean pork. If there are special conditions such as partial diet, long-term consumption of finely ground white rice, incorrect method of rice panning, hyperthyroidism disease, pregnancy, etc., when vitamin B1 deficiency occurs, foot fungus can occur. Symptoms of beriberi can manifest as peripheral neuritis, as well as aching limbs, weakness, swelling, circulatory symptoms, etc.