Meningitis in children includes nonspecific mesenteric lymphadenitis, mesenteric lipomatosis, and retractile mesenteritis, all of which can cause fever. 1. Nonspecific mesenteric lymphadenitis: Nonspecific mesenteric lymphadenitis may be caused by infection by bacteria, parasites, viruses, mycoplasma and other pathogens. Patients will have fever, as well as abdominal pain, nodular swelling in the lower abdomen, nausea and vomiting, diarrhea and other manifestations. 2. Mesenteric lipomatitis: the cause of mesenteric lipomatitis is not clear, and it is considered to be related to abdominal trauma, mesenteric infection, allergic reaction, immune dysfunction and other factors. Patients will manifest fever, fatigue, lethargy, abdominal distension, abdominal pain, abdominal mass and so on. 3. Retreating mesenteritis: the cause of retracting mesenteritis is not clear at present, which may be related to malignant tumor, bacterial infection, vascular injury and other reasons. Patients will not only have fever, but also weight loss, jaundice, dyspnea, lower abdominal pain, anorexia and other manifestations. It is recommended that parents need to take their children to the doctor in time to check the type of intestinal meningitis in children, and choose appropriate measures to treat the condition.