There are several possible causes of stuffiness under the left rib cage: 1, chronic gastritis, if the long-term diet is unclean, may lead to gastric and epigastric, there is chronic gastritis, after eating, may lead to the left rib cage, there is a feeling of stuffiness, treatment can be given Daxi gastric protection, but also massage gastric and epigastric to relieve pain. 2, rib chondritis, if the left rib cage, long-term cold or strain, may lead to local aseptic inflammation produced, treatment The first of these is the use of the cephalexin capsule, which is an anti-inflammatory agent, and the use of traditional Chinese medicine, fumigation, foot soaks and massage to relieve the symptoms. 3, cardiovascular disease, if there is angina, coronary heart disease and other diseases, the left side of the rib cage will also be stuffy and swollen, and may be accompanied by the left side of the heart and chest suffocation, pain and other symptoms. It is recommended to immediately consult a cardiology clinic to improve the relevant tests, clarify the cause and treat the symptoms.