The feeling of back obstruction may be caused by physiological reasons such as cold stimulation and long-term strain, or by pathologic factors such as lumbar diseases and visceral diseases. 1. Physiological reasons: long-term cold stimulation of the back muscles will lead to muscle vasoconstriction, microcirculation obstruction, muscle stiffness, resulting in the symptoms of back obstruction. Prolonged stooping and heavy labor will cause micro-injury to the soft tissues of the back, inducing aseptic inflammation, which may also be manifested as a sense of obstruction in the back. 2. Pathological reasons: when suffering from lumbar diseases, it may also lead to back obstruction, such as lumbar disc herniation, lumbar spondylolisthesis, etc. Lumbar diseases will lead to local muscle tension and swelling. The cause of back obstruction sensation in visceral diseases may be related to radiating pain, such as myocardial ischemia and angina pectoris, which may result in obstruction sensation on the left side of the back, and cholecystitis and gallbladder stones, which may result in obstruction sensation on the right side of the back. The symptoms of dorsal obstruction alone sometimes can not accurately determine the cause, but also need to be combined with the characteristics of the medical history, other test results to make an accurate judgment, it is recommended that the cause of the disease under the guidance of a doctor and targeted treatment.