Dural sac compression in lumbar disc bulge generally refers to lumbar disc herniation with dural sac compression, which needs to be judged according to the specific condition to determine whether it can be recovered, which may or may not be recovered. Lumbar disc herniation is mainly caused by degenerative lesions, strain injury and other reasons, the lesions can cause pressure on the dural sac. If the pressure is not severe and prolonged, and there are no adhesions or necrosis, the dural sac may recover after the pressure is removed. However, if the dural sac is compressed for a longer period of time and the compressed area is more serious, it can lead to localized lesions. Hyperplasia and hypertrophy of the dural sac, necrosis due to local ischemia, and adhesion between the dural sac and the surrounding tissues may occur, so it may not be possible to recover completely after relieving the factors of compression. It is recommended that patients with lumbar disc herniation with dural sac compression go to the hospital as soon as possible and follow the doctor’s instructions for treatment to avoid delaying the condition.