Transient fever may occur after vaccination with live attenuated B vaccine, and usually the body temperature will return to normal within 2 days. Fever after vaccination with live attenuated Hib vaccine is mostly normal and is a side effect of vaccination, and the vaccinated person can be allowed to drink more boiled water and rest more. If the fever is above 38.5℃, the duration of the disease is more than 3 days, or accompanied by other symptoms, you should go to the hospital in time for examination and active symptomatic treatment. In addition, pay attention to not bathing after inoculation, you can wipe your body. Take a light diet, avoid spicy and stimulating foods, and exercise properly to strengthen your body.