A wheezing left subcostal pain considers the following conditions: First, respiratory diseases, such as pneumonia involving the pleura or acute pleurisy, will present pain under the left side of the rib cage when breathing, along with respiratory symptoms such as coughing, coughing, fever, and difficulty breathing. Second, intercostal neuralgia, some patients with intercostal neuralgia will have pain in the ribs when breathing, and the pain is also more obvious when pressing, which is a localized rib problem. Third, cardiac neuralgia, which is mostly seen in young people, has more obvious subjective symptoms and presents with pain under the left rib cage when breathing, accompanied by chest tightness, shortness of breath, dyspnea or pain in the precordial area, which is a functional disease and does not require special treatment.