The main consideration is that prickly heat, eczema, hives and so on, are the main causes of the red bumps on the body of children in summer. 1. prickly heat: prickly heat is in the hot and humid environment due to sweat pore blockage and occur, mainly manifested as small pimples, surrounded by a red halo and accompanied by itchy prickly sensation, most often in summer and children. In most cases, the rash can gradually disappear by itself after keeping the area dry and can be relieved by topical medication such as glycerin lotion. 2. Eczema: Eczema is an inflammatory skin disease caused by a variety of factors, which can be manifested as erythema, papules, blisters, etc., accompanied by itching symptoms. Boric acid, zinc oxide, ice cream, hydrocortisone cream can be used externally to relieve the symptoms, and daily attention should be paid to avoid scratching, hot water to wash the affected area. 3. Urticaria: Urticaria is related to food, drugs, environment and other factors, belongs to the allergic diseases, often manifested as wind and red spots, mostly accompanied by itching. Oral loratadine, cetirizine and other drugs can be taken to help relieve the symptoms, and daily triggers should be removed. If the symptoms are serious, it is recommended that the patient consult a doctor in a timely manner to clarify the cause of the disease and then carry out targeted treatment, and the use of medication should be strictly in accordance with the doctor’s instructions.