Quantum electrodynamics (QED) or relativistic quantum field theory of electrodynamics acts as a theory of perturbation of the quantum vacuum and allows to describe all phenomena associated with interacting charged particles. QED, being both the simplest and the most successful quantum field theory, allows to teach students the mathematical and advanced language of quantum theories, illustrating their application with specific examples. As a result of training, students learn to construct and determine the dimensions of interaction processes, master the Feynman diagram technique, and become familiar with the indicators of the "Standard Model". At present, the methods of quantum field theory have found magnetic application in many areas of physics, in particular, in such sections as nuclear physics or condensed matter physics, quantum field methods have proven themselves as a very effective tool for solving a wide range of problems. Thus, mastering these methods within the framework of this course is a prerequisite for understanding the course material.