Coughing right subcostal pain may be caused by right-sided chest diseases, right-sided rib diseases, trauma and other reasons. 1. Chest diseases: such as right pleurisy, pneumonia, emphysema, pleural effusion, lung tumor, tuberculosis, pneumothorax, lung abscess, thymoma, chronic obstructive pulmonary disease can appear right subcostal pain. 2. Right side rib diseases: such as right side intercostal neuritis, right side costochondritis, right side subcostal pain can also occur. 3. Trauma: such as right rib fracture, soft tissue contusion, lung contusion, etc. can lead to right subcostal pain. In addition to the above, diseases of gallbladder, right kidney, upper ureter, gastric sinus, liver, pancreatic head, duodenum and so on can also cause the above symptoms. It is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, and then give targeted treatment or therapy.