There are physiological and pathological dirt in the navel, you can first use warm water to soak, and then use a cotton swab to gently wipe away, pathological dirt can use hydrogen peroxide disinfectant to soak, and then use a cotton swab or tweezers to remove. 1. Physiological dirt: mainly due to the usual cleaning of the navel is not timely, resulting in the shedding of the stratum corneum or foreign matter in the navel folds and the formation of dirt, you can use warm water to soak, so that it is softened, and then use a cotton swab to gently erase, during this period of time to be gentle, and to avoid the use of sharp objects, in order to avoid damage to the skin at the navel leading to infection. 2. Pathological dirt: mainly due to navel infection caused by the navel at the crust or exudate accumulation and formation, it is recommended that the use of hydrogen peroxide disinfectant solution for soaking, not only can make the dirt soften, easy to take out, but also play a disinfectant role for the cotton swab is not easy to erase the larger dirt, you can use tweezers and other gently take out the umbilicus and try not to damage the skin at the umbilicus. It is recommended to go to the hospital to dispose of, especially when there is a bacterial infection of the navel, can be given under the guidance of a professional physician, such as amoxicillin and other antimicrobial drugs, do not be negligent, so as not to delay the condition.