Acute mesenteric lymphadenitis is mostly a viral infection, often complicating the course of acute upper respiratory tract infection or secondary to intestinal inflammation, and can be prevented in daily life. Specific preventive measures are as follows: 1. Pay attention to the prevention of colds and flu, and try not to go to public places during the high influenza season, as well as to exercise properly to enhance physical fitness; 2. Pay attention to dietary patterns and dietary hygiene to prevent the occurrence of intestinal diseases; 3. Promptly treat diseases that predispose to upper respiratory tract infections, such as zinc deficiency or vitamin A and vitamin D deficiency; 4. symptoms, antiviral and anti-infection treatment should be carried out immediately; 5. Regular medical checkups can achieve early detection, early diagnosis and early treatment.