The effect of peloids having low temperatures of +23-25 degrees C was studied in 65 patients with rheumatoid arthritis. Pelotherapy was found to produce antiinflammatory, anesthetic, desensitizing effects, to improve metabolic trophic processes, locomotor activity, and to exert immunomediator action. The therapy is indicated for patients with rheumatoid arthritis, activity degree II and III, its seropositive type in the presence of exudative proliferative manifestations in the articulations.