Children with hoarse throat and low fever can be considered related to upper respiratory tract infection, acute laryngitis and other causes. 1. Upper respiratory tract infection: mostly caused by viruses, infection can cause a variety of clinical manifestations, such as nasal congestion, sneezing, runny nose, sore throat, dry throat, itchy throat, fever and other symptoms, pharyngeal congestion, hoarseness. 2. Acute laryngitis: is an acute inflammation of the laryngeal mucosa, can occur after a cold, the vocal folds mucosal congestion and edema can cause hoarseness, due to inflammation, there can be chills, fever and sore throat, cough and other manifestations. Children with hoarse throat and low fever, there may be other reasons, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.