Children with sudden onset of high fever without other symptoms need to be treated, may be related to the early stage of colds, toddler emergency rash and other causes, the treatment taken include general treatment, drug treatment and so on. 1. Early stage of cold: at the beginning of the child has no other symptoms, only fever, in the acute stage, there may be a runny nose, coughing, sneezing, etc., the need for warm water baths to reduce fever, if necessary, using drugs, such as acetaminophen, ibuprofen, etc. to reduce fever. 2. Childhood Acute Rash: It is characterized by asymptomatic high fever, commonly seen in children between the ages of 3 and 4 years old, and requires warm water baths to reduce fever, and medications such as acetaminophen and ibuprofen can be used to reduce fever. It is recommended to go to the hospital in time to identify the cause of the disease, under the guidance of the doctor to give the corresponding treatment and treatment, the above drugs need to be used under the guidance of the doctor.