Back sitting discomfort, uncomfortable can be caused by the following causes: first, dorsal myofasciitis, dorsal myofasciitis is often a chronic aseptic inflammation of the fascia of the back due to cold, strain, then there can be sitting back strain, feeling uncomfortable, painful symptoms, then early examination and examination to exclude other diseases to diagnose and treat. Secondly, osteoporosis, when there is severe osteoporosis, there can be sitting strain, back discomfort symptoms, this time to check the thoracic spine X-ray, CT and blood tests for early diagnosis and early treatment. Third, tumors, when there is a tumor in the spine, there can also be sitting back discomfort symptoms, can be accompanied by systemic symptoms, such as low fever, wasting, weakness symptoms, then early blood tests and MRI of the spine, X-ray examination for early diagnosis and treatment.