The space in the vertebral canal is narrow and the nerve structure is protected by dura and cerebrospinal fluid, while the vertebral canal tumor will destroy this structure or even invade this structure, so there may be corresponding sequelae after surgery, as follows: 1. Affecting spinal stability: cutting bony canal affects spinal stability, additional fixation system can be attached, including plate screws; 2. Cerebrospinal fluid leakage: adhesion between tumor and surrounding tissues, when removing tumor, the normal structure can be removed. normal structure, such as dural defect leading to dural defect of vertebral canal and cerebrospinal fluid leakage; 3. neurological dysfunction: adhesion of tumor and neural structure or compression of neural structure for too long leads to neurological dysfunction, and neurological dysfunction cannot be fully recovered after surgery; 4. sequelae of special reasons: normal blood vessels supply both tumor and neural tissue, and after resection of tumor, blood vessels affect peripheral nerve supply, which may lead to new neurological dysfunction.