The question of whether it is better to take medicine or injections after a fever depends mainly on the cause of the fever and the severity of the condition. Fever is a common clinical symptom, there are many causes of fever, for example, fever caused by common viral cold, at this time can be cured by taking medicine, there is no need for injection, patients should pay attention to rest, drink more water, avoid getting cold again, you can take some oral cold medicine and antipyretic drugs for treatment, generally 3-5 days to heal. However, for fever caused by bacterial infection of the respiratory system, urinary system, biliary tract, etc., patients mostly need to choose sensitive anti-infective drugs for treatment according to the situation, and for patients with heavy infection, the treatment effect of injection is better, which can better control the corresponding infection and thus better control the degree of fever. Therefore, for patients with fever, it is important to clarify the cause of the disease and choose whether to take medication or injections for their specific condition.