Today, the prevalence of Covid-19 has reached 62 million people. Currently, there are 130 thousand infected people in Kazakhstan. The numbers change daily, as the number of cases is constantly growing. Coronaviruses are a family of viruses that do not have DNA, but their genome is contained in RNA macromolecules. However, also on the territory of Kazakhstan, children had another complication - Kawasaki syndrome. So, in total, the number of people who showed this syndrome reached 14. The article presents a clinical case from the cardiology department of the city children's hospital of Karaganda, in which a male patient at the age of 10 was diagnosed with mucosal lymphonodular syndrome (Kawasaki) Multisystem inflammatory syndrome (Kawasaki-like syndrome) associated with COVID-19. From the anamnesis, it is known that he was ill for several days, there was an increase in temperature to febrile numbers, abdominal pain, and loose stools. Further, a laboratory diagnostic study and an instrumental study were conducted, as well as a consultation with other specialists. Based on the results of these studies, the conclusion was made Multisystem inflammatory syndrome (Kawasaki-like syndrome) associated with Covid-19. Treatment tactics: receiving complex therapy, pulse therapy with corticosteroids, as well as kiovig - human immunoglobulin, which helps to fill the antibody deficit. Against the background of the introduction of this drug, the patient has a positive dynamics.