Stomach flatulence for three or four days chest tightness pressure unbearable may be eating too much gas-producing food such as sweet potatoes, gastrointestinal dyspepsia, chronic gastroenteritis and many other reasons, you can choose the general treatment, medication, etc., it is recommended that timely medical treatment, exclude other systemic organic diseases. 1. General treatment: stop eating food that produces too much gas in time, pay attention to adequate rest and regular life, avoid eating spicy and stimulating, greasy food such as chili peppers, cakes, etc., and avoid drinking carbonated beverages, strong tea and coffee. 2. Drug treatment: according to the condition, you can choose appropriate acid inhibiting preparations such as omeprazole and ranitidine; promote gastrointestinal dynamics such as domperidone and mosapride; digestive enzymes such as compound digestive enzymes; and anti-anxiety and depression drugs such as amitriptyline and paroxetine. Gastric flatulence for three or four days chest tightness pressure unbearable may also be caused by other reasons, should promptly consult a doctor to clarify the cause.