Provided is use of a nitrogen-containing bisphosphonate in combination with a glucocorticoid in preventing or treating viral pneumonia. Specifically, provided is a nitrogen-containing bisphosphonate in combination with a glucocorticoid for use in treating or ameliorating coronavirus infections, the nitrogen-containing bisphosphonate is selected from the group consisting of pamidronate, alendronate, risedronate, ibandronate, zoledronate, minodronate and incadronate. The glucocorticoid is selected from the group consisting of dexamethasone, rimexolone, prednisolone, fluorometholone, hydrocortisone, mometasone, fluticasone, beclomethasone, flunisolide, triamcinolone, fluticasone propionate, beclomethasone dipropionate, budesonide and mometasone furoate.