The patient navel inflammation accompanied by purulent discharge, common causes are mainly the following situations: 1, due to the location of the patient navel deeper, the internal can be accompanied by sludge, if the cleaning is not thorough will cause the local bacteria, viral residues induced infections, purulent secretions, need to be timely physical cleaning of the navel, to avoid the aggravation of local infections. 2, the navel is accompanied by itching, if the patient scratching excessively can cause the local skin The bacteria and viruses enter the body along the skin rupture, which can also cause localized purulent infection with purulent secretion.3. If the patient’s navel is accompanied by umbilical hernia, the intestinal mesh in the abdominal cavity can be repeatedly protruded on the body surface through the local defect, and once accompanied by intestinal mesh incarceration, it can cause localized skin ischemia, hypoxia, and purulent secretion. At this time, patients need emergency surgery to avoid the occurrence of serious complications such as infectious shock caused by intestinal necrosis.