Patients with diarrhea, fever and generalized aches and pains suggest acute gastroenteritis or gastrointestinal flu, which is probably caused by eating unclean food or getting cold, and is directly related to the damage of the mucosa of the gastrointestinal tract caused by bacteria and viruses, and requires routine stool tests plus blood tests for clarification. If the test is clear that it is acute gastroenteritis, you need to use antibiotics such as norfloxacin and compound flavopiridol tablets for 3-5 days. If the examination is clear for gastrointestinal cold, anti-infection treatment with antiviral oral liquid and patchouli water is needed. Patients with more pronounced diarrhea symptoms can cause excessive loss of water and electrolytes in the body, which needs to be supplemented with oral rehydration salts or replenished by infusion at the hospital. In addition, when diarrhea is severe, it can also be treated with montelukast to stop diarrhea. If the fever exceeds 38 degrees, you can consider using compound diclofenac sodium injection to lower the temperature intramuscularly.