Clean up the navel dirt method for cleaning with water, and then clean up with cotton balls. Navel dirt is the body’s normal physiological metabolic process of the material, if the navel dirt is less, you can directly use water to clean the navel, and then gently wipe with a wet towel; if the navel dirt is more, you can first use iodine volts to disinfect, and then use a cotton ball to rotate to erase the dirt. If the navel dirt is hard, you can use warm water to soften it, and then wipe it with a cotton ball. In cleaning the navel dirt need to pay attention to avoid excessive force, so as not to break the navel surface skin, easily infected with bacteria, but also lead to discomfort in the navel, causing abdominal pain, diarrhea and other situations. In addition, do not directly use your hands to pick the navel dirt, because there are bacteria on the hands, long-term use of hands to pick it is easy to lead to bacterial infection. Cleaning the navel dirt if you find the umbilical skin damage, swelling, purulent discharge and other symptoms, you need to go to the hospital in time to avoid adverse effects.