Repeated low fevers of 37 to 38 degrees in babies may be harmful, such as causing loss of appetite, weakness of the body, muscle aches and pains, and other symptoms. In addition the disease that causes recurrent low fever in children may also be more dangerous and need early diagnosis and treatment. Repeated low fever of 37 degrees to 38 degrees, the baby is a certain damage to the body, such as repeated low fever will cause the body to lose a lot of energy, and produce a lot of acid, resulting in loss of appetite, weakness and muscle aches and pains and other symptoms, but also on the child’s mood to have a certain impact. In addition, recurrent low fever may be caused by chronic infections, or autoimmune diseases or tumors, etc., which need to be examined as soon as possible, otherwise it may lead to the deterioration of the disease, which may be more harmful to the health.