Foot odor is mainly caused by fungal infection, if it spreads to the body can appear ring-shaped erythema, slightly elevated at the edge, slightly receding in the center, and on the erythema can see fine scales, can have a certain itching, part of the erythema can fuse into a large area, the patient is more painful. If the fungal microscopy is positive, topical terbinafine hydrochloride spray should be applied twice a day, followed by luliconazole cream. If the fungal test is negative and the rash behaves very close to the manifestation of ringworm with fungal infection, you can apply a compound, such as trimethoprim cream or compound ketoconazole ointment for treatment. It is important to avoid washing clothes and socks together to avoid the spread of fungus and recurrent rashes.