The fever is related to diseases such as gastrointestinal flu, food accumulation, cholecystitis and pancreatitis. 1. gastrointestinal flu: it is caused by viral infection, the virus will not only invade the gastrointestinal system, but also affect the patient’s immune system, so the patient will have fever, stomach discomfort and other symptoms. 2. food accumulation: many people will have a weak spleen and stomach, overeating and overeating leading to the appearance of food accumulation, and people with food accumulation because of 4, pancreatitis: the attack is based on severe pain in the abdomen, stomach discomfort, nausea, vomiting, fever and other symptoms, and the patient’s pain also radiates to the back, requiring timely gastrointestinal decompression, control of inflammation and other treatment.