As the temperature gradually rises and the humidity in the air increases, the frequency of strong convective weather episodes is also increasing, which not only brings inconvenience to our travel, but also makes us susceptible to skin diseases. Rainwater, especially the ground water, containing bacteria, fungi and other microorganisms. The water content of the corneal layer of the foot skin increases after a trip, and the hot, humid, and nutrient-rich environment of the foot is especially conducive to the reproduction of microorganisms. 1. Tinea pedis. Tinea pedis is caused by a fungal skin infection, commonly known as “foot fungus”, “athlete’s foot”, “rotten feet”, the most common occurrence of the disease after the rain. It usually starts in the toe crease of one foot, which itches and blisters the skin of the toe crease, and then gradually becomes flaky and expands, and can be transmitted to the other foot. It can also be transmitted to others through sharing slippers, towels, and bath tubs. If left untreated for a long time or not treated regularly, tinea pedis can persist and lead to itchy, rough, flaky, cracked, and smelly skin on the feet, and thickened and deformed nails on infected toenails, which can be very unattractive and difficult to treat. 2, dermatitis. Daniosis is caused by bacterial invasion of the foot wound, usually secondary to tinea pedis, diabetic patients or people with small wounds on the foot, manifested as redness and swelling of the wound, after the redness and swelling quickly spread to the back of the foot, ankle or even calf, thigh, edema, pain, accompanied by inguinal lymph node swelling and pain, fever, and can even lead to systemic infection in serious cases. If not treated in time, the disease can become chronic dermatophytosis repeatedly, turning into “elephant skin legs”. 3. Fossa keratolytica. This disease is caused by rod-shaped bacillus infection of the palm of the foot skin, generally children, people with sweaty feet are common. Manifestation of the foot significant foul odor, the palm of the foot in groups of green bean-sized round keratin layer exfoliation, walking with pressure pain. Countermeasures: rain-wetted shoes and socks should be replaced in a timely manner. Commuters, school people go out in the rain as far as possible to wear slippers or rain shoes, after the trip to the water in time to wash the feet with water, with dry shoes and socks to indoor replacement. Foot wounds, chaps, diabetics should avoid soaking in the rain, you can choose rain shoes. However, because rain shoes are not breathable, the heat and sweat emitted from the skin cannot evaporate, which can also lead to tinea pedis attacks, so they should not be worn as ordinary shoes throughout the day. Once you find any discomfort in your feet, you should go to the hospital as soon as possible to receive regular treatment.