Pressing pain in the ribs below the left breast is mostly seen in costochondritis, which is caused by the body under various triggering factors, such as the body’s immune system, trauma, infection, overwork and tumor. Inflammation occurs at the junction of costal cartilage and sternum, most of which are aseptic non-specific inflammation, and a few of which are infectious inflammation, which is manifested by pain at the site of onset, such as distension and occult pain, etc. The pain is accurately localized, and it is aggravated by activity or exertion. The disease is prevalent in young adult males, elderly or women can also suffer from the disease. The disease is a self-limiting disease, after rest, appropriate hot compresses can be relieved, part of the manager’s treatment is ineffective patients, you can urge the use of Fitalin ointment for external use, or oral blood circulation drugs and non-steroidal anti-inflammatory drugs, such as celecoxib tablets. In order to clarify the diagnosis to exclude other diseases, it is recommended to timely visit the hospital surgery, if necessary, feasible X-ray examination, electrocardiogram examination and other clear diagnosis.