Most cases of enteritis are due to viral infections. The principles of treatment primarily involve diet adjustment, prevention and correction of dehydration, rational use of medication and enhanced nursing care, and preventing complications such as dehydration. Treatment of diarrhea varies with different stages; during the acute phase, it is important to maintain a balance of water and electrolytes, while prolonged and chronic diarrhea requires attention to intestinal flora imbalance and dietary adjustments. A minority of diarrhea cases are caused by bacterial infections, and if there is clear evidence of bacterial infection, appropriate antimicrobial drugs should be used.