It is necessary to analyze why babies have repeated fevers. There is always a reason for children's repeated fevers. Fevers are mostly caused by inflammation. Children at this age have poor resistance, lack immunity to many pathogens, and face many cross infection opportunities in the process of growth and development. Sometimes colds and fevers can't be prevented. It seems that children have repeated fevers, In fact, there is no necessary connection with the last fever. In addition, some children with recurrent fever may have basic diseases, such as congenital heart disease or children with frequent respiratory tract infection, and pulmonary dysplasia is an exception. Clinically, children with repeated fever should be evaluated. The reason why children have repeated fever may not be fully understood. For example, complicated urinary tract infections must have urinary tract abnormalities. The urinary tract infections often cause acute pyelonephritis changes in the upper urinary tract. Clinically, children at this age are often ignored by doctors due to lack of urinary tract irritation symptoms. In this case, it is necessary to detect the cause of children's repeated fever. If necessary, it is necessary to use laboratory tests, such as isotope or B-ultrasound and other imaging examinations, to find out the real cause of the disease. In a word, doctors should pay enough attention to children's clinical fever.