At present, the common clinical use of fever-reducing injections include injectable lysergic acid and so on. Although the fever injection is fast, but because the child’s hip muscles are not fully developed, try to choose physical cooling or oral medication when fever, do not recommend the first choice of fever injection to reduce fever. When a child has a fever, a fever-reducing injection is needed in the buttock muscles for injection, but because the child’s buttock muscles are not fully developed, the injection is likely to cause local muscle swelling and other phenomena, so it is generally not recommended that the child to take a fever-reducing injection. Children with fever, if the body temperature is not higher than 38.5 degrees, you can give priority to physical cooling, such as the head of the antipyretic patch or warm water baths and so on. If the temperature is higher than 38.5 ℃, you can follow the doctor’s instructions to use antipyretic medication for treatment, commonly used drugs are ibuprofen, acetaminophen and so on. Children with fever, it is recommended to consult a doctor in a timely manner, to clarify the cause of fever, and to carry out targeted treatment. It is recommended that the use of drugs under the guidance of the doctor, avoid unauthorized use of medication, not to blindly play fever-reducing injection.