Scarlet fever is an acute respiratory tract infection, most commonly seen in children and adolescents, and is contagious because it can be spread by airborne droplets. It is important to isolate the child to avoid the spread of the disease. The main clinical manifestations of the disease are fever, pharyngitis, and a generalized red rash with post-rash flaking. If not actively treated, it can cause complications such as heart, kidney and joint diseases, so treatment must be actively carried out to control the disease, shorten the course of the disease and avoid complications. Strengthen the care of the child, control the body temperature, drink more water, eat fresh fruits and vegetables rich in vitamins, rest in bed, and do not engage in strenuous exercise. Avoid crowded places as much as possible during the epidemic, and always wear a mask when in contact with patients for good protection.