Foot odor may be caused by physiological reasons, tinea pedis, hyperhidrosis, etc., deodorant first need to clarify the cause of the disease, and then through the general treatment, medication and other methods of deodorant. 1. Physiological reasons: If the foot odor is caused by increased sweating, it can be deodorized by keeping the feet clean, often using soap and water to wash the feet, drying the feet after washing, and changing the shoes and socks frequently. 2. Tinea pedis: If the foot odor is caused by tinea pedis, you need to use topical antifungal drugs, such as fluconazole, ketoconazole, etc. for treatment, and oral itraconazole treatment if necessary. 3. Hyperhidrosis: If the foot odor is caused by hyperhidrosis, it can be controlled by topical antiperspirant containing aluminum chloride, or by iontophoresis. All medications for foot odor should be used under the guidance of a medical professional after consultation to avoid adverse reactions.