The belly button will not die after it is picked. The belly button should be disinfected with iodophor in time to avoid infection of the subcutaneous tissue and avoid umbilicus. If the navel becomes infected, the area around the navel or below the navel becomes red, swollen, hard, painful and inflammatory, and may be accompanied by pus from the navel. Oral antibiotics, such as cefixime or cefradine, are needed, and antibiotic creams, such as mupirocin, can be applied to the surface of the navel. When inflammation of the navel occurs, you need to change the medication and wipe the surface of the navel with iodophor every day, and if an abscess forms, you need to incise and drain the pus.