Children have dirt inside the navel, it is best to clean it. The dirt inside the navel is mainly skin metabolites and sweat stains, which need to be cleaned in time, otherwise it is easy to lead to local redness, swelling and odor, and infection. Once the umbilical cord infection to be as soon as possible for povidone-iodine disinfection treatment, if necessary, but also under the guidance of the doctor to use antibiotic treatment. If there is something dirty inside the navel, it is best to use water to clean the skin around the navel, and then use iodophor or 75% alcohol to disinfect the treatment. Avoid picking and scratching the dirt directly with your hands. In summary, usually to do a good job of local care, avoid bathing water infiltration, the weather is hot and sweaty to timely cleaning, to avoid localized infections.