The hand that has touched the foot fungus and then picks the nostrils may be infected. Tinea pedis is medically known as tinea pedis, which is caused by fungal infection of the skin of the feet, and can be divided into three types: blistering, inter rubricated vesicles, and scaly keratinized, often manifesting symptoms such as peeling, blistering, rough and dry skin or moist vesicles, and itching, which is contagious and can be spread through contact. The main pathogenic bacteria of tinea pedis are red trichophyton, trichophyton fungus, flocculent epidermal fungus, etc. When patients with tinea pedis scratch their feet due to itching, if they don’t clean and disinfect them in time, it may lead to tinea infections to other parts of the body to form tinea cruris, tinea cruris, and tinea corporis. Therefore, using the hand that has touched the tinea pedis and then picking the nostrils may be infected. Tinea pedis patients should go to the hospital in time, by the doctor to clarify the type of germs after targeted treatment. To strictly comply with the doctor’s prescription medication, daily to strengthen the life care, keep feet dry, wash hands and feet diligently, to avoid infection and recurrence.