The effectiveness of including steam inhalation with therapeutic diluted sodium chloride mineral water in the rehabilitation complex of patients after pneumonia caused by the SARS-CoV-2 coronavirus was determined. Patients in the control group received a basic complex of sanatorium rehabilitation, which included electrophoresis with 10% CaCl2 solution on the chest area, magnetic laser irradiation on the lungs, massage, and exercise therapy. Patients in the main group received steam therapy with therapeutic diluted chloride mineral water containing metasilicic acid. Patients in this group showed a significant decrease in the frequency of obstructive disorders in the bronchopulmonary system, a considerable increase in the frequency of physiological indicators of external respiratory function, improvement in the functional state of the respiratory system according to the Borg scale and physical activity according to the 6-minute walk test, and a significant decrease in the level of inflammatory markers. Adding a course of steam inhalation with therapeutic diluted sodium chloride mineral water to the basic complex of sanatorium resort rehabilitation has increased its effectiveness.