The causes of acute enteritis include physiological factors such as improper diet, and pathological factors such as bacterial infection, viral infection and parasitic infection. 1. Physiological factors: Eating cold, too hot, a lot of acidic food, toxic food, taking gastrointestinal stimulating drugs such as aspirin, or alcoholism can lead to acute enteritis. 2. Pathologic factors: (1) Bacterial infection: Consumption of food or raw water contaminated by bacteria can induce acute enteritis. Commonly infected bacteria in children include Escherichia coli, Campylobacter, etc. Commonly infected bacteria in adults include dysentery bacillus, salmonella, etc. (2) Viral infections: common viruses include norovirus, rotavirus, etc. Norovirus mainly infects children and adults, and rotavirus mainly infects infants and young children. (3) Parasitic infections: Parasites that often lead to infections include amoeba. There are many other causes of acute enteritis, it is recommended to go to the regular hospital in time, after clarifying the cause of the disease, under the guidance of the doctor for targeted treatment.