The name sand dermatitis is actually named after the habits of the patient, especially the child, and the full name is actually called friction tinea-like rash. The onset of the disease is mainly due to children’s frequent sand and water play, which leads to an inflammatory irritant reaction to the skin from specific substances in the sand and water. This results in the development of a uniform, uniform, circular papule on the skin of the child, especially on the wrist and the back of the hand, and is generally referred to as sand dermatitis. This dermatitis is due in part to a localized allergic reaction or has allergic, inflammatory changes. The disease is usually treated with antihistamines, and prevention involves avoiding the use of soap and water or alkaline bathing products and reducing the frequency of sand and water play.