If there are no abnormal symptoms, parents can observe the child closely. It is possible that the symptoms are not serious after a cold, and the fever will clear up on its own in one day. It is also possible that the child’s temperature rises due to high ambient temperature or excessive clothing, and not due to the disease. Therefore, as long as the child does not have any clinical symptoms, observe the child closely. Observe the child for respiratory abnormalities, such as sneezing, runny nose, or poor feeding, and if so, suspect a throat infection. Or whether there are abnormalities in the digestive system such as nausea, vomiting or abdominal distension, and whether there is an increase in the frequency of urination and bowel movements, etc. Based on the observation of the child’s symptoms, early detection of the child’s possible disease problems.