Belly button due to the number of people cleaning less in daily life, local often accompanied by more bacteria and metabolic waste accumulation. According to the navel how much dirty things in different situations, the clinic can often take different cleaning methods: First, if the patient navel metabolic waste less, the local dirt is relatively loose, you can use soapy water, cotton balls clockwise or counterclockwise spiral cleaning, you can achieve a better removal effect. Second, if the patient navel more dirty things, and dirty things and local skin dense adhesion, it is recommended that patients use concentrated sodium chloride cotton balls, local immersion for 5-10 minutes, can make the local dirt soften, fall off, and then give 75% alcohol cotton balls or 0.5% vital iodine cotton balls local repeated cleaning, you can remove the local dirt, but also to achieve the effect of local disinfection, killing bacteria.