For fever generally try not to get an injection when you can do without it. Because the injections are mainly aminopyrine and its derivatives, such as Advil and Anacin, the side effects are relatively large, after the injection may appear a lot of sweating, prone to deficiency, or even shock. For allergic patients, an allergic rash, or even urticaria or erythema may occur. If there is granulocytopenia, aplastic anemia may appear. Therefore, for patients with general fever, if the body temperature does not exceed 38.5°C, physical antipyretic methods can be used by constantly wiping the body with a warm towel. If the child’s body temperature is higher than 38.5℃, Tylenol and ibuprofen granules can be used to reduce fever orally, which are more effective for reducing fever and have less side effects on the human body.