The immunomorphological characteristics of the gastric mucosa were evaluated and analyzed in patients with asthma of varying severity who received or did not receive inhaled or oral glucocorticosteroid therapy and in the control group. Immunohistological examination and morphometric analysis were used to study inflammatory infiltration in fundic mucosal biopsy specimens from patients with and without asthma. There were crucial immunomorphological differences between the examined patient groups and signs of the gastroprotective effect of inhaled glucocorticosteroids used in the basic therapy of asthma on the gastric mucosa. There was evidence that it is urgent to prevent erosive and atrophic gastritis and other inflammatory stomach diseases in asthma.