Infant diarrhea and fever may be caused by infectious or non-infectious factors. Infectious factors such as bacterial infections and viral infections, of which rotavirus infections are the most common cause of fever and diarrhea, and non-infectious factors such as systemic diseases, such as malnutrition, as well as food allergies and intolerance to the ingredients of the formula can cause diarrhea and fever in infants. Common treatment measures for infant diarrhea and fever mainly include the application of antibiotics or antidiarrheal drugs, the application of intestinal probiotics, timely rehydration, fever reduction and so on. First, the treatment of the cause: 1, the application of antibiotics or antidiarrheal drugs: usually to check the baby’s stool routine, it is best to take fresh stool, retained in a clean plastic container, within one hour of the laboratory, if the test shows a large number of white blood cells or blood, usually suggests intestinal infection. If it is a bacterial infection, you need to take antibiotics reasonably under the guidance of the doctor for treatment, such as ampicillin, parents should not blindly use antibiotic drugs for treatment, so as not to cause dependence on drugs and drug resistance. If the diarrhea is caused by intestinal viral infection, it is necessary to give rehydration and antidiarrheal drugs in time, such as montelukast, which can alleviate the symptoms of diarrhea; 2, the application of intestinal probiotics: intestinal dysfunction may occur during the period of diarrhea and fever in infants, it is recommended that the use of intestinal probiotics to regulate, such as bifidobacterium triplex live bacterial powder, Saccharomyces boulardii powder, or Lactaseptin tablets, etc., should be taken under the direction of a doctor, as appropriate. Take it under doctor’s guidance. Symptomatic treatment: 1, timely rehydration: if the symptoms of diarrhea are more obvious, there are obvious dilute watery stools or egg-shaped stools, easy to dehydration, it is recommended to take oral rehydration salts in a timely manner, in small quantities and multiple times of feeding. If oral rehydration salts are more difficult, the symptoms of dehydration are more serious, and the infant already has few tears and dry lips, it is necessary to reasonably administer intravenous fluids under the guidance of a doctor to avoid serious dehydration and electrolyte disorders; 2, antipyretic treatment: if the infant’s axillary temperature does not exceed 38.5 ℃ when the fever is higher than that of a baby, it can be physically cooled down, and if the degree of the fever is more serious, and the axillary temperature exceeds 38.5 ℃, it is necessary to apply antipyretic treatment under the guidance of a doctor. To apply fever-reducing drugs under the guidance of a doctor, usually take ibuprofen or acetaminophen, to avoid febrile convulsions due to high body temperature. In addition, parents should also give infants more warm water, which can replenish water, prevent dehydration, promote blood circulation, drug absorption and body temperature drop. Infants should pay attention to a light diet during diarrhea and fever, drink more rice porridge, rice soup, noodle soup and other well-digested food, do not eat greasy, spicy, stimulating food, such as fatty meat, chili peppers, green onions, etc., and do not eat raw and cold food, such as fruits and vegetables just taken out of the refrigerator. During the recovery period of the disease, parents should slowly return the baby to the original diet from less to more, from thin to thick, otherwise the disease may recur and prolonged.