Causing chest pain on the right side of running is usually caused by inhaling a lot of cold air, myocardial ischemia, chest muscle injury and other reasons. 1. Inhaling a lot of cold air: when running, breathing deepens, and cold air stimulates the walls of the trachea and esophagus, which will reflexively cause diaphragmatic spasm and gastric spasm, thus causing pain in the chest. 2. Myocardial ischemia: exercise will make the myocardium do more work, increase oxygen consumption, easy to appear myocardial ischemia, thus causing chest pain. 3. Chest muscle injury: when running, the upper limbs swing, chest muscles in the sternum at the costal cartilage, which will lead to chest muscle ligament injury, it will cause chest pain. Patients who have chest pain on the right side of running should consult a doctor in time to clarify the cause of the body and carry out standardized treatment under the guidance of the doctor.