Pressing on the middle and lower part of the chest rib cage can be due to intercostal neuritis, costochondritis or trauma. 1. Intercostal neuritis: Intercostal neuritis is usually caused by infection with herpes zoster, and in some patients, it can also be caused by infection, nerve compression, trauma and other factors. It can cause pain in the chest, which will be aggravated by deep breathing, coughing, sneezing or pressing. 2. Costochondritis: Costochondritis is a kind of sterile inflammation, which will cause chest tightness, redness and swelling of the lesion area, and chest pain, and the pain will be aggravated when pressed. 3. Trauma: when the middle and lower part of the sternal ribs of the patients are hit or squeezed by external force, it will cause soft tissue injury or fracture, which will cause the patients to have the symptom of pressing pain. Pressing pain below the sternal ribs may also be due to other reasons, such as pneumonia, stomach diseases, etc., and should be timely to the hospital for treatment.