Cephalosporin or fever, may be a more serious condition or improper use of medication, etc., should go to the hospital as soon as possible for sputum culture examination, drug sensitivity test, etc., to clarify the type of pathogens of infection, and then use sensitive antibiotics for treatment, if necessary, consider the infusion of treatment, or adjust the therapeutic drugs, etc.. 1. Serious condition: If the fever is still present after the cephalosporin injection, it should be diagnosed as a result of the seriousness of the condition, and a professional doctor should, based on the results of the examination, specify the type of infectious agent, and then select sensitive antibiotic drugs for treatment as soon as possible, and if necessary, consider the infusion of fluids for treatment, to promote the reduction of fever, and control the condition in a timely manner. 2. Improper medication: If you have a cephalosporin or fever, it may be improper treatment of medication, can not effectively control the condition, we must cooperate with the professional doctor in time to adjust the treatment of medication. Therefore, after the cephalosporin or fever, it is recommended to cooperate with the doctor as soon as possible to improve the relevant examination, and timely selection of corresponding drugs for treatment, in order to effectively control the condition, accelerate the fever.