Implant fusion of the spine is a commonly used internal fixation technique in the field of spine surgery. Since this technique involves fusing at least two vertebrae together, it is bound to cause different degrees of stiffness in the spine after surgery, which more or less affects the normal flexion, extension and rotation functions of the spine, and brings different degrees of discomfort to the patients. At the same time, the risk of degeneration of the adjacent stages of the spine is also increased. As a result, elastic internal fixation of the spine was developed, which, in some ways, reduces the disadvantages of spinal implant fusion techniques. The elastic internal fixation of the spine (non-fusion technique) involves posterior elastic fixation (not fusion fixation) based on effective limited decompression. The biggest advantage of this technique is that limited, effective decompression, postoperative can maximize the preservation of spinal flexion, extension and rotation function, significantly reduce the patient’s spinal stiffness; reduce the adjacent stage of degeneration. After surgery, it is usually not necessary to perform internal fixation removal, eliminating the pain of secondary surgery. Spinal elastic internal fixation surgery has achieved satisfactory results in the treatment of lumbar disc herniation, lumbar spinal stenosis, lumbar spine instability, Ⅰ ° lumbar spondylolisthesis and other orthopedic diseases, which can enable patients to walk on the ground at an early stage, and the operation cost is low, which is highly praised by most of the patients.