“The pain below the left rib cage is like a fork in the wind” may be related to intercostal muscle or diaphragm spasm, respiratory diseases, digestive diseases, etc. It is recommended to consult a doctor in time to clarify the specific causes of the disease. 1. Intercostal muscle or diaphragm spasm: often occurs when participating in weight lifting, running, climbing and other sports activities before the warm-up is not ready, or when exerting too much force, intercostal muscle and diaphragm appear short-term lack of oxygen, spasm will occur, resulting in pain. 2. Respiratory diseases: such as pneumonia in the left lower lung, rupture of lung blisters in the lower lobe of the left lung, acute pleurisy on the left side, etc., all of which can lead to sudden pain below the left rib cage. Meanwhile, respiratory system diseases may also lead to cough, fever, shortness of breath, dyspnea and other manifestations. 3. Digestive system diseases. Diseases such as gastrointestinal dysfunction, gastritis, left-sided colitis, acute gastric ulcer, acute gastric spasm, pancreatitis and other diseases may also lead to the sudden appearance of pain under the left rib cage. With the appearance of pain under the left rib cage, patients are advised to actively seek medical treatment.