Introduction and aim. Nanomedicine is a discipline of technology and science, the potential of which has recently fascinated scientists in the fields of physics, biotechnology, chemistry and medicine. This department deals with everything on the nano scale, i.e. on the level of individual atoms and molecules. This work presents the nano scale, i.e. on the level of individual atoms and molecules. Nanotechnology is currently one of the most popular and dynamically developing fields, not only in electronics, but above all in pharmacy and medicine. Material and methods. In this article a narrative review regarding nanomedicine. Analysis of the literature. The desire to summarize information about nanomedicine application of singlet oxygen is presented. Nanotechnology is a discipline of technology and science, the potential of which has recently fascinated scientists in the fields of physics, biotechnology, chemistry and medicine. Conclusion. The use of nanostructures is currently very efficient. The areas in which the potential of nanoparticles is constantly researched and confirmed by numerous articles are: radio- and chemotherapy, cancer diagnostics and imaging medicine (MRI and fluorescence imaging).