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Repair of spinal cord injury (SCI) is a difficult challenge in clinical medicine as well as a hot field of Neuroscience research.According to the fundamental principles of tissue engineering,this thesis is focused on dealing with the basic problems in the repair of SCI by studying the promising seed cells and scaffold biomaterials.The idea of using tissue engineering scaffolds in the treatment of spinal cord injury (SCI) is drawing more and more clinical attention,and the introduction of some new materials has promoted its development.T Tissue engineering scaffolds used in the treatment of SCI mainly include nature biomaterial and synthesize macromolecule biomaterial,each with its advantages and disadvantages.This review focuses on some tissue engineering scaffolds commonly used in SCI.