Whether lumbar T2 spinal cyst 25x26x33mm needs surgery needs to be judged according to the patient’s clinical manifestations and so on. If there are no symptoms such as pain or abnormal sensation in the limbs, no treatment is needed and observation is sufficient. If symptoms such as pain and abnormal sensation in the limbs occur, surgery may be required. A common surgical procedure is posterior thoracic decompression. Posterior thoracic decompression is currently the most commonly used procedure for the treatment of thoracic spinal cysts. The procedure uses the posterior thoracic spine as the surgical approach, peeling off the diseased segment layer by layer to expose the diseased segment and perform radical resection of the cyst. After resection, internal fixation is often required to stabilize the thoracic spine due to the destabilization of the thoracic vertebral body. Lumbar spinal cyst is a common disease in spinal surgery, which needs to be diagnosed and treated under the guidance of specialized doctors.