Toddler emergency rash a few days after the rash and fever is generally considered to be secondary infection caused by the need to give symptomatic treatment according to the specific conditions. The baby’s temperature is below 38.5 ℃, you can physical cooling, warm water wipe brow, armpits, groin area and other parts of the promotion of heat dissipation, give the baby more water, light diet, more rest and other care measures; temperature more than 38.5 ℃, but also need to oral ibuprofen suspension, acetaminophen antipyretic drugs. At the same time for the cause of fever treatment is also very critical, such as secondary viral infections, generally no special treatment drugs to symptomatic treatment; such as secondary bacterial infections, the use of cefixime, amoxicillin and other drugs for treatment; such as secondary influenza virus infections, the use of oseltamivir for treatment. The reappearance of fever a few days after the emergence of infantile emergency rash is mostly due to secondary infections caused by low immunity, which need to be promptly consulted and evaluated by specialists. All of the above medications should be used under doctor’s supervision, avoid self-medication.