Both sides of the rib fork pain may be caused by the following reasons: first, rib chondritis, both sides of the rib fork usually refers to the rib cartilage, and a sterile inflammation of the rib cartilage may cause pain. Second, to exclude intercostal muscle or rib disease, such as intercostal muscle strain, sterile inflammation, trauma, rib fracture, bone fracture, rib tuberculosis, rib tumor, can cause two fork pain. Third, it may also be some internal organ problems, such as lung tumor, lung inflammation, infection, pleural effusion, pleural tuberculosis, inflammation, and tumor, all of which can cause pain in the two forks of the ribs. Fourth, it may also be some metastatic tumors, systemic metabolic diseases, all of which can cause pain in both sides of the rib fork.