The baby does not have any symptoms of fever, the most common is still due to respiratory tract infections, in the early stage can only show fever, not accompanied by respiratory symptoms, common viral, bacterial and other pathogenic infections, but also may be caused by food accumulation, if the baby’s age is relatively small, and is the first time the fever, need to be highly alert toddler emergency rash occurs. Respiratory tract infections: the baby’s body immune function is relatively immature, so it is easy to get infectious diseases, the child viral infections may appear repeated fever, but also will cause great suffering to the child. The baby’s accumulation of food caused by fever is also relatively common, and this type of fever, the general use of drugs is not very effective, the need to timely clean out the accumulation of food can also be relieved fever symptoms. Not all diseases will appear beforehand certain signs of performance, for the fever without any symptoms, parents and friends must take the child to the regular hospital for examination and treatment, so as to avoid further development of the disease.