Magnetic resonance imaging (MRI) began its development in 1882, and its can be traced even today. The working principle is based on the motion of MRI active nuclei. One of these nuclei is also the hydrogen nucleus which is important because of its prevalence. MRI in childhood requires skills and knowledge to be successfully performed with minimal stress and risk to the child and family. Because it is a non-inavsive method which doesn`t use ionizig radiation, is a good choice for diagnosis various diseases such as inflammatory, infectious or degenerative diseases of the spine. In addition to showing bone structures, it is also suitable for displaying soft tissue structures in the spine such as the spinal cord. Damage to such a large system can leave great consequences, so timely diagnosis is important. Although it is thought to be one of the safest imaging methods, ti needs to be approached carefully. The aim of this final work is to present the specifics of the examination of the child`s spine by magnetic resonance imaging and to point out the importance of knowledge and proper performance of the MRI.