There are five main possibilities for men with right-sided chest pain: first, chest trauma, mostly with a clear history of trauma, manifested as chest swelling and pain, accompanied by the formation of skin spots. Secondly, costochondritis, which is usually found between 2-4 ribs, with clinical symptoms mainly being stabbing pain in the chest, and the pain is mostly aggravated after exertion or cold. Third, pleurisy, mostly secondary to lung infection, manifests as a limited dull pain in the chest, and the pain is aggravated by deep breathing. Fourth, gynecomastia, a common type of male breast disease, manifested as breast enlargement accompanied by breast pain and discomfort. Fifth, lung cancer, manifested as stabbing pain in the chest, which may be accompanied by coughing or hemoptysis. There are various causes of right chest pain in men. When right-sided chest pain occurs, one should seek medical consultation at a regular hospital in time to clarify the cause of the pain and actively cooperate with a specialist for treatment, which will not cause serious clinical consequences.