Bacterial enteritis in infants can be caused by unclean diet, not paying attention to hand hygiene and so on. 1. unclean diet: this situation is mostly seen in the summer, the summer heat under the condition of bacterial reproduction faster, if the child accidentally ate into the bacterial contamination of food leading to bacterial infection and bacterial enteritis, the clinical manifestations of diarrhea, abdominal pain, crying more than one, and so on. 2. Do not pay attention to hand hygiene: children are playful by nature, but do not pay attention to personal hygiene, if the hands touch dirty toys and then lick the fingers, it may make the pathogenic bacteria into the child’s body and lead to gastrointestinal infections. Parents are advised to take their children to the hospital for examination to make a clear diagnosis, and then carry out targeted treatment.