Pain below the left side of the rib cage, the following common causes: First, pancreatitis, mostly after meals often, accompanied by abdominal distension, nausea, vomiting, fever and other symptoms, the diagnosis can be confirmed by blood and urine amylase measurement, during treatment avoid overeating. Secondly, intercostal neuralgia, which can be aggravated by coughing, deep breathing or sneezing, can be diagnosed by physical examination, chest X-ray, thoracic spine X-ray, etc. Patients should be careful to take pain medication to avoid affecting the doctor’s diagnosis. Third, herpes zoster, as it is an acute infectious skin disease caused by varicella-zoster virus, serological examination can be performed to confirm the diagnosis and antiviral treatment. Fourthly, forked breath, mostly during or after exercise, is diagnosed by physical examination and imaging, and can generally be relieved by abdominal massage, abdominal breathing, and slow deep breathing.