Intradural tumors, also known as spinal cord tumors, are a general term that includes primary or metastatic tumors that occur in the spinal cord itself and in various tissues within the spinal canal that are in close proximity to the spinal cord (e.g., nerve roots, dura mater, blood vessels, adipose tissue, and tissues of congenital embryonic remnants, etc.). Intraspinal tumors can compress the spinal cord and nerves, causing limb movement and sensory disorders. Primary spinal cord tumors have an annual incidence of 2.5 per 100,000 population. The incidence rate is similar between men and women, but chordoma is more common in women and ventricular meningioma is more common in men. The incidence is higher in the thoracic spinal cord, but the incidence is about the same in proportion to the length of each segment. The nature of intraspinal tumors is most common in adults as nerve sheath tumors; followed by chordomas; and the rest are congenital tumors, gliomas, and metastatic tumors in that order. In children, congenital tumors (dermoid cysts, epithelioid cysts, and teratomas) and lipomas were most common; followed by gliomas; and nerve sheath tumors in third place. The main clinical manifestations caused by tumors of the spinal canal are: motor disorders, sensory disorders, sphincter dysfunction and disorders of vegetative nerve function. The main signs and symptoms are nerve root damage in the plane where the tumor is located and involvement of the pyramidal tract below that level. For example, nerve root pain, decreased sensation or abnormal sensation (numbness or ankylosis) below the level of damaged spinal cord, motor disorder, sphincter dysfunction, constipation, urgency to urinate or even incontinence. Vertebral canal tumors can be divided into intramedullary tumors and extramedullary tumors according to their location. Extramedullary tumors include extramedullary subdural tumors and epidural tumors. Intramedullary tumors are mainly astrocytomas and ventricular meningiomas, which account for about 20% of all spinal cord tumors. Extramedullary tumors include subdural and epidural tumors. The former are nerve sheath tumors (including neurofibromas) and spinal meningiomas, which account for about 55% of all spinal cord tumors. The latter account for 25%. Magnetic resonance imaging (MRI) of the spinal cord: this is currently the most valuable diagnostic auxiliary examination method. It can not only observe the lesion in three directions: sagittal, coronal and axial, and locate the lesion accurately, but also observe the relationship between the lesion and the spinal cord, nerves and bony structures of the spinal column. After injection of paramagnetic contrast agent Gd-DTPA, qualitative diagnosis can be made according to the imaging characteristics of certain tumors themselves, so that preoperative localization diagnosis of the tumor can be made, and even the nature of some of the tumors can be determined, which is of great help to the selection of surgical methods and comprehensive treatment. Surgical treatment of intraspinal tumors was firstly carried out by Gowers and Horsley in 1887, and the surgery was exploratory in nature. With the development of advanced diagnostic techniques and surgical operation techniques, the surgical effect of spinal cord tumors has been significantly improved. Unlike intracranial tumors, about 3/4 of intravertebral tumors are benign lesions, and their prognosis is good if they can be completely excised at an early stage. For malignant tumors, after surgical resection of most of the tumors and adequate decompression, supplemented by postoperative radiotherapy, a certain period of remission can also be obtained. Therefore, surgery is the absolute surgical indication for the treatment of intraspinal tumors. The treatment of spinal cord and spinal column tumors is an important part of neurosurgery, and microsurgery is the main means of treating spinal cord and spinal column tumors. Accurate positioning, fine microsurgical techniques, and intraoperative electrophysiological monitoring are the keys to successful treatment of spinal spine tumors. Prognosis of intraspinal tumors: it depends on the nature of the tumor, the growth site, the degree of spinal cord compression, time and the general condition of the patient. Generally speaking, the higher the segment where the tumor is located, the greater the scope of neurological impairment. The prognosis is relatively poor.