Scratching the foot and touching the baby’s mouth will not usually spread “foot odor” to the baby’s mouth, but in a few cases it may cause fungal infections. Foot fungus is also called tinea pedis, which is a fungal infection, the disease is mainly caused by red fungus, ringworm fungus, plaster-like microsporidium and flocculent epidermal fungus infection. The baby’s mouth itself contains a lot of antimicrobial substances (e.g. immune cells, lysozyme, etc.), and in most cases, a fungal infection in the mouth area will not occur just because of a single carelessness. However, in a few cases may also be infected with fungi, such as fungal lipitis, when found that the baby has dry lips, cracking, flaking symptoms, with or without itching, should promptly seek medical attention. So daily life should pay attention to prevent, hand accidentally contact foot foot after timely cleaning hands, clean before avoid touching the baby and other items. If you have any discomfort symptoms, you need to go to the hospital as soon as possible, by the doctor according to the specific condition, standardized treatment.