There are five main possibilities for right chest pain in men: first, chest trauma, mostly with a clear history of trauma, manifested as chest swelling and pain, accompanied by skin in the formation of spots. The second is costochondritis, which occurs in the 2-4 intercostal space, and the clinical symptoms are mainly chest pain, and the pain is aggravated by exertion or cold. Third, pleurisy, mostly secondary to lung infection, manifested as limited dull pain in the chest, and the pain is aggravated by deep breathing. Fourth, gynecomastia, a common disease of male breast, manifested as breast enlargement with breast swelling and discomfort. Fifth, lung cancer, manifested as stabbing pain in chest, which may be accompanied by cough or hemoptysis. There are various reasons that cause right chest pain in men. When the right side of chest pain occurs, you should go to the regular hospital in time, clarify the cause of pain, and actively cooperate with the specialist for treatment, which will not cause serious clinical consequences.