Complications of spinal canal tumors are mainly as follows: 1, the common complication is postoperative bleeding, no matter whether it is done vertebral or intracranial, the common complication is that bleeding, infection, etc. can occur after the operation; 2, special complications in the vertebral canal, the spinal cord is in charge of motor sensation, reflexes, sphincter function, urinary and fecal function, if the motor neurons or motor conduction bundles are injured, it can lead to the patient’s paralysis of limbs, or sensory deficits, and sensory disorders and dysfunctions of urine and faeces such as urinary and faecal weakness, retention, and difficulties in defecation in the plane of paraplegia.