Severe foot odor during breastfeeding is not very related to breastfeeding, consider that it is caused by other factors, the main causes are the following: first, usually do not pay attention to personal hygiene, often wear non-breathable shoes and caused by foot odor. Second, often alternate shoes and socks, do not pay attention to the isolation of items, can also lead to serious foot odor. Third, usually often in a humid environment, the air is too humid, which can lead to bacterial growth and cause foot fungus. Fourth, other factors, such as environmental factors, physical factors, psychological factors can lead to serious foot odor. When there is foot odor, it is best to use medication in a timely manner, do not use oral medication during breastfeeding, you can apply topical medication to help alleviate the problem of foot odor.