Аннотация:A number of mechanisms linking the damaging factors of COVID-19 with acidosis have been considered, and the existence of positive feedbacks between the development of hypoxia and acidosis has been shown. In the early stages of the disease, inflammation, difficulty in gas exchange, thrombosis and other damage to the body bring the onset of acidosis closer. In accordance with the Verigo-Bohr effect, a decrease in blood pH leads to a decrease in saturation, which contributes to the further development of acidosis and leads to a deterioration in the patient's condition. A decrease in pH can also cause conformational changes in the S-protein of the virus and lead to a decrease in the affinity and avidity of antibodies.