A child’s fever without cold symptoms may be caused by infectious and non-infectious factors. 1. Infectious factors: such as viral infections, bacterial infections, fungal infections, protozoal infections, etc., can lead to fever in children, and some of the pathogenic infections do not lead to cold symptoms in children, but may appear other manifestations, or even simply manifested as fever, such as infantile acute rash. 2. Non-infectious factors: in addition to infectious diseases, there are also rheumatic immune diseases and blood system diseases, which can also lead to fever in children without cold symptoms. Such as systemic lupus erythematosus, dry syndrome, acute leukemia. For some younger children, summer fever may also occur, because children’s thermoregulatory center development is not mature. The causes of fever in children without cold symptoms are more reasons, it is recommended to go to the hospital in time to check, clear the cause of active treatment.