The disease caused by new coronavirus infection (COVID-19) is a global problem not only because of its wide spread occurrance, but also due to the high incidence of post-COVID syndrome. The literature review presents the results of numerous observations of patients, who undergone COVID-19. The most common symptoms are: general weakness, impaired cognitive functions, memory loss, depression, anosmia, dysgeusia, shortness of breath, cough, chest pain, abdominal pain, anorexia, nausea, vomiting, diarrhea, less often — alopecia, skin rashes, etc. The most frequent symptoms of the post-COVID syndrome are described; the reasons and risk factors for its development are analyzed. The lack of views sameness on the term “postCOVID syndrome” makes it diffi cult to evaluate the frequency of certain symptoms development. Variants of the post-COVID syndrome are considered. It is proposed to distinguish between the post-COVID syndrome, developed after acute COVID-19 that lasts up to 12 weeks, and a prolonged variant of post-COVID clinical symptoms that last longer than 12 weeks, which should be distinguished from lingering COVID-19, its complications, and the consequences of intensive care. The questions of prognosis, diagnostics, and treatment of post-COVID syndrome are discussed.