Scarlet fever in children aged 3-6 years is caused by group A group B Streptococcus haemolyticus infection, and the main treatments include antibiotic treatment such as penicillin and general treatment such as attention to isolation and bed rest. Scarlet fever in children is an acute respiratory infectious disease caused by Group A Streptococcus B hemolyticus infection, which mainly manifests itself as fever, pharyngitis and generalized red rash, and the treatment mainly includes antibiotic treatment such as penicillin, and penicillin allergy can be treated with azithromycin and other treatments. Drug treatment also needs to take general treatment such as attention to isolation, bed rest, give enough water and nutrition. Avoid going to crowded public places and pay attention to skin hygiene to prevent skin infection. Scarlet fever in children aged 3-6 years old requires prompt medical attention, standardized treatment and medication as prescribed by the doctor.