In general, one foot has foot odor and the other does not because the affected side of the foot odor has not spread to the opposite side, which is a normal phenomenon, and should be treated in a timely manner, in order to prevent the other foot also infected with foot odor. Foot fungus for foot ringworm, is caused by the skin fungal infection, initially occurring on one side of the foot, lesions manifested as small blisters on the foot, dandruff, vesicles between the toes, etc., mostly accompanied by itching, with a strong infectious. It is highly contagious. If it is not treated in time, it may infect the other foot. Only unilateral feet with tinea pedis need to be treated in time, you can choose according to the characteristics of the skin lesions sertaconazole nitrate, amorolfine cream and other antifungal drugs for treatment. In addition, you should wash your feet diligently in your daily life and keep your feet clean and dry; try to choose breathable shoes and socks, wash them frequently and change them often, and the affected foot should not be mixed with the healthy foot to wear socks; avoid spicy and stimulating food in your diet, which will not be conducive to the improvement of ringworm of the feet; and avoid going to the public bathrooms, which will reduce the risk of ringworm of the other foot, and also avoid infecting other people. If you are suffering from athlete’s foot, you should go to the hospital in time for treatment under the guidance of your doctor.