A bad smell in the hands of the navel a pick, mostly due to the weak skin at the navel, the folds are more obvious. Affected by lifestyle, environmental factors, easy to inflammation or infection, the phenomenon of odor, or even a bad smell. A common cause 1, environmental factors: because the navel is usually covered with clothing, and more skin folds, susceptible to environmental temperature and humidity, humid environment is conducive to bacterial growth, prone to infection, followed by bad odor; 2, lifestyle: long time do not pay attention to personal hygiene, do not wash the navel in a timely manner, easy to cause dirt residue, and sweat mixed together, protein corruption, appear odor or even malodor. The above factors can easily lead to diseases in the umbilical fossa area, such as umbiliculitis and umbilical sweat rash; it can also be congenital umbilical ureteral fistula or the appearance of umbilical ureteral tumors. It can also be caused by secondary diseases, such as intra-abdominal infections, abscesses, tumors and other diseases that invade the umbilical fossa depression. Second, treatment methods patients should pay attention to personal hygiene, regular thorough cleaning of the navel area skin, skin folding parts are not easy to clean, you can use a moist cotton swab gently wipe, keep the local dry, do not use unclean fingers to pick, grab the navel area, so as not to cause local skin breakage. When there is an inflammatory reaction or secretion in the umbilicus, you can use medical alcohol or iodophor to clean and disinfect the umbilicus. If the disease is caused by the navel a picking hands have a bad smell, to follow medical advice to actively treat the disease, the use of drugs to fight infection, the condition requires surgery.