Various imaging techniques are used in spinal magnetic resonance imaging, so it is important to understand the types and pros and cons of each imaging technique. It is also important to understand the various ways and principles to optimize each imaging technique, in order to apply the optimized imaging technique for each spinal disease. It is also important to understand the ways to reduce the metallic artifact caused by the increasing spinal surgery metal, and the pros and cons of the widely used 3T device, for the optimization and diagnosis of the image.