The cause of vertebral cysts is not very clear, clinical analysis is mainly related to intravertebral canal infection, abnormal development of the spinal canal, local strain and other factors. 1. Intravertebral canal infection: when there is inflammation in the vertebral canal leading to intravertebral canal infection, vertebral canal cysts may be formed after the inflammation is limited and absorbed. 2. Abnormal development of the spinal canal: when the congenital development of the tissues in the spinal canal is abnormal, cysts may also be formed in the spinal canal. 3. Localized strain injury: When localized strain injury leads to abnormal proliferation of tissues in the spinal canal, cysts may also be formed. The cause of vertebral cysts is not really important. The vast majority of vertebral cysts do not cause symptoms and are often found unintentionally during an examination, and vertebral cysts that do not cause symptoms usually do not need to be treated.