Heat rash on children’s backs can be treated by general treatment to first lower the temperature of the lesion area, which can be treated with topical medications such as peppermint glycerite lotion, or with topical antibiotic ointment if scratching causes infection. Prickly heat is a common skin condition that occurs in hot and humid environments, and usually subsides on its own when the skin cools down. Children with heat rash on the back should lower their body temperature through air-conditioning or fans, use warm water to rub baths, and use ice packs to ice the areas of skin lesions. Wear loose, breathable cotton clothes, avoid strenuous exercise in hot weather and keep the room at a suitable temperature to prevent heat rash. If you have a lot of prickly heat and the itching is unbearable, you can use topical glycerite lotion and zinc oxide ointment to remove prickly heat and relieve itching. If bacterial infection occurs after scratching, antibiotic ointment, such as fusidic acid, can be used externally. If prickly heat is not significantly improved by daily care, it is recommended to go to a regular medical institution in a timely manner, under the guidance of a specialist to use the above drugs for treatment, do not blindly self-medication, to avoid causing adverse consequences.