There are two reasons for calcification or ossification after lumbar disc herniation: one is lumbar intervertebral herniation with vertebral body posterior edge dissociation, which may be associated with a vertical type of disc protrusion and located at the location of the posterior edge of the vertebral body, resulting in the backward displacement of the fibrous ring along with the bone fragments of the posterior edge of the vertebral body; the second is the long-term loss of stability of the lumbar spine, resulting in intervertebral hyperplasia and calcification of the posterior edge of the protruding disc, which is formed for the purpose of maintaining stability. The former is predominantly in young people and may be related to repeated chronic sports injuries, mostly with a history of prolonged low back pain. The size and morphology of the free bone mass and the bony defect of the vertebral body roughly match, while the edge of the vertebral body defect has obvious osteosclerosis, suggesting that the disease is the result of long-term changes. Sagittal reconstruction of CT scans of the lumbar spine is of greater value for the diagnosis of the disease. The combination of age and site of protrusion can determine whether the posterior edge of the vertebral body is disarticulated or the cause of osteophytes, regardless of the type of calcification, which itself has nothing to do with the severity of the disc herniation, especially the latter hyperplastic type of calcification is often a sign of increasing spinal stability, which is theoretically a “good thing” and can be treated conservatively as long as the symptoms are not severe. If surgery is required, it is not difficult to remove the calcified tissue together, depending on the situation. There is no need to be overly frightened and helpless about calcification of herniated discs.