Below the left rib cage is the stomach and spleen. If there is pain below the ribs, it may be caused by damage to the spleen or gastritis or gastric ulcers, etc. You need to go to a regular hospital to clarify the cause of the disease by means of an ultrasound examination as well as a checkup. But if it is inside the ribs, it may also be the heart, lungs and large blood vessels and other tissues. The ribs can play a role in protecting the internal tissues. In ordinary life, we should do a good job of local warmth, if you find a point later also easy to cause local pain, and to avoid local external impact, otherwise there may be local organs are damaged. Or gastrointestinal diseases caused by the left side of the rib cage below the pain, but also eat more light food, do not eat spicy stimulating food.