The typical symptom of toddler’s emergency rash is that the fever subsides and the rash breaks out, which usually requires daily care and symptomatic management. Childhood acute rash, also known as roseola, is an acute infectious disease of pediatrics caused by a virus. This disease is mostly circulating, with the onset of the majority of babies 6 to 18 months, less common in babies less than 6 months and more than two years of age, occurring throughout the year, with a high incidence in winter and spring. Before the appearance of the rash, children often have a high fever, at 39 to 40 ℃, lasting 3 to 5 days. When the fever subsides, a rash appears, usually a rose-red macular (papular) rash, surrounded by a red halo, and fading when pressed. The rash starts from the neck, chest and abdomen, and then spreads to the face, upper limbs and lower limbs. It lasts for 2 to 3 days and then subsides without flaking or hyperpigmentation. Some children may also have other symptoms such as poor appetite and swollen eyelids. If the baby has already suffered from toddler emergency rash, it can usually be treated symptomatically, such as cold compresses on the forehead and other physical antipyretic, if necessary, can follow the doctor’s advice to use ibuprofen and other medications to reduce fever, and during the period of a light diet; should be avoided contact with other babies, so as to avoid contagion. If the diagnosis is confirmed toddler emergency rash, it is recommended to standardize the treatment as soon as possible to reduce the adverse effects of the disease.