A sports body will itch may be due to sweat stimulation, cholinergic urticaria and other causes. 1. Sweat irritation: Exercise will speed up the blood circulation of the body, and the skin will have the phenomenon of sweating. Sweat contains lactic acid, urea and other components, which may cause skin irritation and make the skin itchy. 2. Cholinergic urticaria: Exercise can make the cholinergic nerve impulse and release acetylcholine, which can stimulate the cell secretion of histamine and induce cholinergic urticaria, which can show the symptoms of itchy skin. It is recommended to go to the hospital to do the relevant examination and treatment for the situation of itching on the body when there is a movement. At the same time, we need to pay attention to daily skin cleanliness, after exercise, we should clean up the sweat on the skin in a timely manner.