Left and right side pain below the rib cage may be the following situations: first, there are inflammatory diseases, such as common intercostal neuritis or costochondritis, etc., when suffering from these inflammatory diseases, it can cause the lesion area of the skin and mucous membrane as well as the increase in the permeability of the blood vessels, and at the same time the inflammation itself will have a certain degree of exudate material, these substances, if they can not be absorbed by the organism or discharged out of the body, will cause the lesion area of the periosteum to be stimulated, which may induce pain. If these substances cannot be absorbed by the body or discharged, it will cause the periosteum of the lesion area to be stimulated, which may induce pain. Secondly, it may be caused by the blockage of qi or the decline of the liver’s excretory function. According to Chinese medicine, liver is wood and plays the role of regulating qi, if liver function is abnormal, it will lead to qi stagnation, thus causing blockage of veins and channels, and also cause pain at the bottom of ribs on the left and right side, this is because liver is under the ribs, so when the liver’s excretory function decreases, it will lead to pain at the bottom of the ribs.