The main manifestation of infantile emergency rash is sudden onset of high fever, which lasts 3-4 days and then the body temperature drops and gradually returns to normal, and the fever subsides while corn-like rose-colored papules appear on the skin of the whole body. The treatment methods of Chinese medicine are as follows: 1. Internal treatment: the fever phase mainly manifests as sudden onset of high fever lasting 3-4 days, accompanied by slight nasal congestion and cough, and should be treated with Yin Qiao San Plus Decrease, which clears wind and heat; the rash phase mainly manifests as a decrease in body temperature and the appearance of corn-like rose-colored papules all over the body, the rash is scattered, not painful and not itchy, and should be treated with Hua Zhan Detoxification Tang Plus Decrease, which clears heat, cools blood and detoxifies toxins; 2. External treatment method: the rash period can be used to rub the water boiled by Su Ye, Phyllanthus, and Xihe Liu, which is more effective. The specific medication should be combined with clinical practice and guided by the doctor’s interview.