Stem cell therapy in spinal cord injury is still in the research stage and has not yet been formally applied to the clinic, but theoretically, the effect of stem cell therapy in treating spinal cord injury is relatively good. This treatment can repair the neurons caused by the injury, and can also alleviate the patient’s movement disorders, which will help the patient’s recovery. There are also many neurotrophic factors in stem cells that can activate damaged nerve cells in spinal cord injury patients. Stem cells can promote the formation of new myelin sheaths in nerve fibers, ensuring the functional integrity of nerve fibers and the normal conduction of nerve electricity. After implantation, stem cells can differentiate into neurons, astrocytes and oligodendrocytes, which help repair and replace spinal cord neuron structure and function, and produce a variety of extracellular matrix fillers. It provides support for the regeneration of axons in the hollow neurons left after the injury. To summarize, although the effect of stem cell therapy in treating spinal cord injury is theoretically more ideal, it has not yet been formally applied in the clinic. It is recommended that patients go to regular hospitals and choose the appropriate method for treatment under the guidance of professional doctors.