Rash after fever reduction in infants is commonly seen in toddler’s emergency rash, the symptoms of which are mainly light reddish colored spots and other skin lesions, and attention should be paid to the monitoring of the state of the child and the care of the area of the rash. Symptoms of infantile rash are mainly reddish blotchy rash or maculopapular rash that appears after the fever subsides, and the color fades when pressed. It is common on the neck, trunk, buttocks and other parts of the body. The rash is generally scattered distribution, 1~2 days or so can subside, after subsiding generally no pigmentation. During the course of the disease, the supervision of the child should be strengthened, pay attention to the child’s body temperature, mental state. Keep the surrounding environment quiet and comfortable. At the same time, the rash area should be kept clean and dry, avoid washing with soap and water to avoid skin irritation. In addition, it should be noted that the rash can also be caused by other reasons such as allergies, which should be identified. If there is any discomfort, it is recommended to consult a doctor in time for diagnosis and treatment.