Occasional back pain can be caused by the following reasons: first, intercostal neuralgia, intercostal neuralgia can be chronic, resulting in occasional back pain, which is the pain of the intercostal nerves in their course, is a chronic inflammation of the intercostal nerves and lead to, this time, we need to diagnose the early checkups, and early nutritional nerve as well as physical therapy, closed treatment. Second, gallbladder disease, when there is cholecystitis or gallbladder stones, there can be occasional back pain in the early stage, especially after eating greasy food, the pain is very obvious, then we should check the ultrasound and CT of the gallbladder for diagnosis and treatment. Thirdly, rib disease, when there is tumor or metastatic tumor in the early stage of rib, there can be occasional back pain, then we should check the CT and ECT of rib to diagnose, and do blood test if necessary.