For patients with spinal canal cysts, there are primary and secondary spinal canal cysts. For primary spinal canal cysts, many times due to congenital development, such as congenital abnormal dural development, or the presence of intradural tumor cells during growth and development, it is easy to form tumors or cysts in the spinal canal at a later stage, thus compressing the spinal cord and nerve roots in the spinal canal. For secondary intravertebral cysts, it is related to trauma or bacterial infection. This is mainly due to the formation of a significant local hematoma after trauma or bacterial infection of organs in other parts of the body. The bacteria enter the bloodstream and then enter the spinal canal, where they grow and multiply, and later become encapsulated by normal tissue, thus also causing the condition of intradural cysts.