Foul-smelling water from the navel may be due to factors such as inadequate cleaning and navel infection, which can be treated by regular cleaning or the use of relevant medication. 1. Cleaning is not in place, in daily life do not pay attention to personal hygiene, may lead to bacteria and dirt easy to remain in the navel, thus appearing navel out of the phenomenon of smelly water, usually through regular cleaning to alleviate the symptoms. 2. Umbilical cord infection, usually due to bacterial infection, cleaning is not in place and other factors lead to local inflammatory lesions. If left untreated, it may lead to a large amount of bacterial secretions, resulting in the phenomenon of stinky water flowing from the navel. Patients can use povidone-iodine to disinfect the area and then use hydrogen peroxide and other drugs for treatment. When the belly button out of the stinking water, should avoid picking and scratching, in order to prevent the occurrence of infection affecting the recovery of the condition, and go to the hospital in a timely manner to the Department of General Surgery, under the guidance of the doctor’s formal treatment, to avoid delays in the condition.