Inflammation of mesenteric lymph nodes in children can be treated by conservative treatment, drug treatment and intravenous rehydration. 1. Conservative treatment: children with mesenteric lymphadenitis may suffer from abdominal distension, abdominal pain or nausea, etc. At this time, the diet should be adjusted appropriately, and fluids or semi-fluids can be eaten to help alleviate the symptoms of the digestive tract. 2. Drug treatment: mesenteric lymphadenitis may be caused by bacterial infection, patients can take antibacterial drugs such as cefixime and cefdinir. When there is fever and other symptoms, physical cooling, more than 38.5 ℃ can take ibuprofen and other drugs. 3. Intravenous rehydration: patients can also maintain the electrolyte balance of the body through the method of intravenous rehydration. Mesenteric lymphadenitis patients should go to the corresponding department of the hospital in time, and take the appropriate method of treatment. The above medications should be used under the guidance of a doctor.