Breathing back pain may be caused by the fork in breathing, pneumonia, emphysema and other reasons. 1. Breathing forks: If the patient does strenuous exercise, the breathing will be more rapid, if the posture is not too big at this time, it is easy to lead to breathing forks, which will make the patient appear the symptoms of back pain after breathing. 2. Pneumonia: If the patient’s lungs are infected by bacteria or viruses, it is easy to induce pneumonia, which will cause the patient to cough, dyspnea, chest pain and other symptoms, especially the pain will be aggravated when breathing, which will cause the patient to show the phenomenon of back pain after breathing. 3. Emphysema: There are many branches of airways in the lungs, and when emphysema occurs, it can cause patients to experience symptoms such as chest tightness, cough and chest pain. There may be other causes of back pain after breathing, it is recommended to go to the local hospital to clarify the cause of the disease and follow the doctor’s instructions for treatment.