Roseola infantum, also known as baby rose rash, is a common acute exanthematous disease in infants and young children. Its main clinical features are high fever lasting three to four days, followed by a rash after the fever subsides. The virus responsible for roseola is primarily the human herpesvirus types 6 and 7, but other viruses, such as Echo virus 16, adenovirus, and parainfluenza virus, can also cause roseola. The peak incidence of roseola occurs between 7 and 13 months of age, and it mostly affects children under the age of two. The incidence rate of roseola in young children is quite high, and most children generally have experienced roseola. Therefore, parents should be highly vigilant if a child between six months and two years old has a persistent high fever but remains in good spirits, as this may indicate roseola. In such cases, only symptomatic treatment is necessary, without the need for special treatment.