Women appear belly button wet and smelly symptoms, usually first considered as a result of poor personal hygiene habits, such as daily exercise after the body sweat more, then do not pay attention to the cleanliness of the belly button area, dirt gathered for a long time may appear odor, manifested as belly button wet and smelly, generally through timely cleaning, keep dry can be lifted such phenomena. If the local cleanliness is not relieved, it means that the umbilicus may have an infection that leads to wet belly button odor, which may be the occurrence of adult umbilicitis. This symptom is one of the typical clinical manifestations of adult umbiliculitis. Usually due to inadequate cleaning resulting in a deep umbilical fossa with sebum or dirt in the bottom folds of the skin, or excessive cleaning resulting in an inadvertent wound in the umbilical fossa, can lead to bacterial invasion causing infection of the umbilicus and the symptoms of a wet and smelly belly button. In addition to the symptoms of wet and smelly belly button, patients may also experience pain, congestion, edema, etc. in the umbilical fossa or circumambulacral area, foul-smelling plasma discharge may be seen, and some patients may see polyp-like raised granulomas, etc. Adult patients with umbilicus should be treated primarily locally, with hot saline wet compresses being an option on the affected area and keeping the affected area dry on a daily basis. If there is a lot of exudate, skimmed cotton can be used to clean the secretions in the folds of the umbilicus with gentle techniques after dipping in alcohol to remove the exfoliated epidermal tissue to avoid reinfection or inflammation. If there are systemic symptoms, including fever and deep infection, you should actively seek medical attention and receive symptomatic treatment. In addition, it may be caused by other diseases such as umbilical ureteral fistula and eczema. Umbilical ureteral fistula is characterized by leakage of urine from the umbilical port, which is caused by abnormal embryonic development and can be complicated by infection with local symptoms such as wet and smelly belly button, but it is rare clinically and needs to be diagnosed by cystography and can be treated surgically. The eczema is mostly due to the irritation of the navel dirt or chemical detergent, as well as improper care of the breakage, resulting in bacterial infection, in addition to the navel wet smell, the umbilical fossa flushing, erosion, and accompanied by itching, the need to apply drugs for treatment. Therefore, women should pay attention to the cleanliness and hygiene of the navel area in daily life, and try to avoid wearing navel accessories to prevent infection.