Babies with fever and rash are often caused by viral infections. First of all, you should give your baby anti-viral drugs for treatment. You can use Pu Di Lan Anti-inflammatory Oral Liquid or Four Seasons Anti-viral Combination or Pediatric Bei Qiao Qing Heat Granules for treatment, which are all more effective. For fever, as long as the temperature exceeds 38.5°C, you can give your baby some oral ibuprofen suspension to reduce fever. Due to the phenomenon of rash, physical cooling is not very suitable for babies, the sense of skin irritation is more, it is easy to irritate the rash and aggravate the phenomenon of rash. At this time for the phenomenon of the rash, if the symptoms of itchy skin, you can give the baby topical application of glycerine lotion, for the relief of itching effect is also better. If the fever is not too high, below 38.5°C, give the child more water and pay attention to monitor the temperature changes can be; or use some antelope horn particles to reduce fever treatment, the effect is also good.