Whether the navel area is normally cleaned of dust or inflammation caused by navel infection, patients are clinically encouraged or advised to apply complex iodine for disinfection as much as possible, and the application of alcohol for local wiping is not recommended. Although alcohol has a sterilizing effect, it has a dehydrating stimulating effect on the skin, compared to complex iodine, which is less stimulating and more effective for local treatment. After inflammation or infection, try not to wash the local area, avoid bathing or cleaning with sharp instruments, which can cause local damage to the navel and easily lead to bacteria to take advantage of the situation and aggravate the occurrence of infection.