Coughing can lead to pain in the left side of the abdomen, mainly due to several reasons, mainly due to the respiratory system obvious inflammatory reaction, including very serious bronchitis, pneumonia, bronchiectasis, combined with serious infections will stimulate the airway to appear violent coughing, coughing aggravation leads to increased pressure in the chest cavity, so that the pleura, as well as the abdominal muscles, the peritoneum by pulling and cause pain. Left upper abdominal pain is commonly associated with pulling on the airway and parts of the digestive tract such as the stomach and duodenum, especially when combined with digestive tract diseases such as gastritis, gastric ulcers, duodenal bulbous ulcers, and may be accompanied by nausea, vomiting, abdominal pain, bloating, acid reflux and other symptoms. Rarely, trauma, such as rupture of the pleural cavity at the base of the left lung, causing a pneumothorax in the lower left lung, can also lead to this condition. The initial diagnosis can be made by taking a CT of both lungs and an ultrasound of the liver, gallbladder and spleen.