Enlarged mesenteric lymph nodes in children usually heal in 7-14 days, and in some children the condition becomes chronic and the treatment time is prolonged. Mesenteric lymph node enlargement in children is usually caused by viral, bacterial or parasitic infections, often accompanied by abdominal pain, nausea and vomiting. Most children are cured in about 7-14 days with symptomatic treatment. However, in some children, the disease may persist and not be cured immediately, and the course of the disease may be longer, becoming chronic mesenteric lymphadenitis, at which time the treatment may take more than 1 month. Recovery of mesenteric lymph node enlargement in children depends on the degree of infection, physical condition and medication used, and there is no fixed time for recovery. It is recommended that children with enlarged mesenteric lymph nodes seek prompt medical attention and active treatment.