Cough causing right rib pain may be due to pneumonia, muscle injury, lung cancer and so on. 1. Pneumonia: Pneumonia may be caused by bacterial, mycoplasma, viral, chlamydia and other infections, which will cause patients to cough and cough up sputum, and some patients will be accompanied by severe fever, generalized aches and pains and other symptoms of the disease, which will cause chest pain in severe cases, and when coughing, it will lead to the lungs to be thwarted, which will lead to the pain in the right side of the ribs. 2. Muscle injury: frequent coughing or serious coughing will cause the diaphragm to be pulled and damaged, and the damaged diaphragm will be pulled when the patient coughs, thus causing pain in the right side of ribs. 3. Lung cancer: Lung cancer usually does not show obvious symptoms in the early stage, but with the growth of tumor, patients will cough up sputum, hemoptysis, dyspnea and other symptoms. When the tumor invades the right pleura, pain in the right rib cage when coughing may appear. Costal chondritis, trauma, intercostal neuritis and other diseases can also cause symptoms of pain in the right side of the ribs when coughing, patients should go to the hospital in time for examination to clarify the diagnosis and symptomatic treatment.