If there is pain in the stomach and low fever, it is mainly considered to be caused by gastroenteritis, and there is a gastrointestinal type of cold that may also cause this symptom, and a correct diagnosis needs to be made based on other clinical manifestations and physical and laboratory examinations. If there is nausea, vomiting, abdominal pain, diarrhea, it is usually considered to be caused by acute gastroenteritis, and routine blood tests and stool tests are needed. If it is caused by bacterial infection, oral medications such as gentamicin and levofloxacin can be taken. If it is accompanied by headache, sneezing and runny nose, it is mainly considered to be caused by gastrointestinal type of cold, so you can take patchouli capsules orally. Inflammation of the mesenteric lymph nodes can also easily cause this symptom, which can be treated with anti-inflammatory drugs, usually amoxicillin and levofloxacin, and can also be treated with a combination of local heat and massage.